18871380

素因数分解:

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

素因数の和:388

約数の個数: 144

約数和(自身を含む): 64943424

約数和(自身を除く): 46072044

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 27, 30, 33, 36, 44, 45, 54, 55, 60, 66, 81, 90, 99, 108, 110, 132, 135, 162, 165, 180, 198, 220, 243, 270, 297, 324, 330, 353, 396, 405, 486, 495, 540, 594, 660, 706, 810, 891, 972, 990, 1059, 1188, 1215, 1412, 1485, 1620, 1765, 1782, 1980, 2118, 2430, 2673, 2970, 3177, 3530, 3564, 3883, 4236, 4455, 4860, 5295, 5346, 5940, 6354, 7060, 7766, 8910, 9531, 10590, 10692, 11649, 12708, 13365, 15532, 15885, 17820, 19062, 19415, 21180, 23298, 26730, 28593, 31770, 34947, 38124, 38830, 46596, 47655, 53460, 57186, 58245, 63540, 69894, 77660, 85779, 95310, 104841, 114372, 116490, 139788, 142965, 171558, 174735, 190620, 209682, 232980, 285930, 314523, 343116, 349470, 419364, 428895, 524205, 571860, 629046, 698940, 857790, 943569, 1048410, 1258092, 1572615, 1715580, 1887138, 2096820, 3145230, 3774276, 4717845, 6290460, 9435690, 18871380]

約数ペア:

[(1, 18871380), (2, 9435690), (3, 6290460), (4, 4717845), (5, 3774276), (6, 3145230), (9, 2096820), (10, 1887138), (11, 1715580), (12, 1572615), (15, 1258092), (18, 1048410), (20, 943569), (22, 857790), (27, 698940), (30, 629046), (33, 571860), (36, 524205), (44, 428895), (45, 419364), (54, 349470), (55, 343116), (60, 314523), (66, 285930), (81, 232980), (90, 209682), (99, 190620), (108, 174735), (110, 171558), (132, 142965), (135, 139788), (162, 116490), (165, 114372), (180, 104841), (198, 95310), (220, 85779), (243, 77660), (270, 69894), (297, 63540), (324, 58245), (330, 57186), (353, 53460), (396, 47655), (405, 46596), (486, 38830), (495, 38124), (540, 34947), (594, 31770), (660, 28593), (706, 26730), (810, 23298), (891, 21180), (972, 19415), (990, 19062), (1059, 17820), (1188, 15885), (1215, 15532), (1412, 13365), (1485, 12708), (1620, 11649), (1765, 10692), (1782, 10590), (1980, 9531), (2118, 8910), (2430, 7766), (2673, 7060), (2970, 6354), (3177, 5940), (3530, 5346), (3564, 5295), (3883, 4860), (4236, 4455)]