81775980

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{353}}^1$

素因数の和:398

約数の個数: 240

約数和(自身を含む): 302236704

約数和(自身を除く): 220460724

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 13, 15, 18, 20, 22, 26, 27, 30, 33, 36, 39, 44, 45, 52, 54, 55, 60, 65, 66, 78, 81, 90, 99, 108, 110, 117, 130, 132, 135, 143, 156, 162, 165, 180, 195, 198, 220, 234, 260, 270, 286, 297, 324, 330, 351, 353, 390, 396, 405, 429, 468, 495, 540, 572, 585, 594, 660, 702, 706, 715, 780, 810, 858, 891, 990, 1053, 1059, 1170, 1188, 1287, 1404, 1412, 1430, 1485, 1620, 1716, 1755, 1765, 1782, 1980, 2106, 2118, 2145, 2340, 2574, 2860, 2970, 3177, 3510, 3530, 3564, 3861, 3883, 4212, 4236, 4290, 4455, 4589, 5148, 5265, 5295, 5940, 6354, 6435, 7020, 7060, 7722, 7766, 8580, 8910, 9178, 9531, 10530, 10590, 11583, 11649, 12708, 12870, 13767, 15444, 15532, 15885, 17820, 18356, 19062, 19305, 19415, 21060, 21180, 22945, 23166, 23298, 25740, 27534, 28593, 31770, 34947, 38124, 38610, 38830, 41301, 45890, 46332, 46596, 47655, 50479, 55068, 57186, 57915, 58245, 63540, 68835, 69894, 77220, 77660, 82602, 91780, 95310, 100958, 104841, 114372, 115830, 116490, 123903, 137670, 139788, 142965, 151437, 165204, 174735, 190620, 201916, 206505, 209682, 231660, 232980, 247806, 252395, 275340, 285930, 302874, 314523, 349470, 371709, 413010, 419364, 454311, 495612, 504790, 524205, 571860, 605748, 619515, 629046, 698940, 743418, 757185, 826020, 908622, 1009580, 1048410, 1239030, 1258092, 1362933, 1486836, 1514370, 1572615, 1817244, 1858545, 2096820, 2271555, 2478060, 2725866, 3028740, 3145230, 3717090, 4088799, 4543110, 5451732, 6290460, 6814665, 7434180, 8177598, 9086220, 13629330, 16355196, 20443995, 27258660, 40887990, 81775980]

約数ペア:

[(1, 81775980), (2, 40887990), (3, 27258660), (4, 20443995), (5, 16355196), (6, 13629330), (9, 9086220), (10, 8177598), (11, 7434180), (12, 6814665), (13, 6290460), (15, 5451732), (18, 4543110), (20, 4088799), (22, 3717090), (26, 3145230), (27, 3028740), (30, 2725866), (33, 2478060), (36, 2271555), (39, 2096820), (44, 1858545), (45, 1817244), (52, 1572615), (54, 1514370), (55, 1486836), (60, 1362933), (65, 1258092), (66, 1239030), (78, 1048410), (81, 1009580), (90, 908622), (99, 826020), (108, 757185), (110, 743418), (117, 698940), (130, 629046), (132, 619515), (135, 605748), (143, 571860), (156, 524205), (162, 504790), (165, 495612), (180, 454311), (195, 419364), (198, 413010), (220, 371709), (234, 349470), (260, 314523), (270, 302874), (286, 285930), (297, 275340), (324, 252395), (330, 247806), (351, 232980), (353, 231660), (390, 209682), (396, 206505), (405, 201916), (429, 190620), (468, 174735), (495, 165204), (540, 151437), (572, 142965), (585, 139788), (594, 137670), (660, 123903), (702, 116490), (706, 115830), (715, 114372), (780, 104841), (810, 100958), (858, 95310), (891, 91780), (990, 82602), (1053, 77660), (1059, 77220), (1170, 69894), (1188, 68835), (1287, 63540), (1404, 58245), (1412, 57915), (1430, 57186), (1485, 55068), (1620, 50479), (1716, 47655), (1755, 46596), (1765, 46332), (1782, 45890), (1980, 41301), (2106, 38830), (2118, 38610), (2145, 38124), (2340, 34947), (2574, 31770), (2860, 28593), (2970, 27534), (3177, 25740), (3510, 23298), (3530, 23166), (3564, 22945), (3861, 21180), (3883, 21060), (4212, 19415), (4236, 19305), (4290, 19062), (4455, 18356), (4589, 17820), (5148, 15885), (5265, 15532), (5295, 15444), (5940, 13767), (6354, 12870), (6435, 12708), (7020, 11649), (7060, 11583), (7722, 10590), (7766, 10530), (8580, 9531), (8910, 9178)]