20514780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{797}}^1$

素因数の和:836

約数の個数: 144

約数和(自身を含む): 73198944

約数和(自身を除く): 52684164

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 13, 15, 18, 20, 22, 26, 30, 33, 36, 39, 44, 45, 52, 55, 60, 65, 66, 78, 90, 99, 110, 117, 130, 132, 143, 156, 165, 180, 195, 198, 220, 234, 260, 286, 330, 390, 396, 429, 468, 495, 572, 585, 660, 715, 780, 797, 858, 990, 1170, 1287, 1430, 1594, 1716, 1980, 2145, 2340, 2391, 2574, 2860, 3188, 3985, 4290, 4782, 5148, 6435, 7173, 7970, 8580, 8767, 9564, 10361, 11955, 12870, 14346, 15940, 17534, 20722, 23910, 25740, 26301, 28692, 31083, 35068, 35865, 41444, 43835, 47820, 51805, 52602, 62166, 71730, 78903, 87670, 93249, 103610, 105204, 113971, 124332, 131505, 143460, 155415, 157806, 175340, 186498, 207220, 227942, 263010, 310830, 315612, 341913, 372996, 394515, 455884, 466245, 526020, 569855, 621660, 683826, 789030, 932490, 1025739, 1139710, 1367652, 1578060, 1709565, 1864980, 2051478, 2279420, 3419130, 4102956, 5128695, 6838260, 10257390, 20514780]

約数ペア:

[(1, 20514780), (2, 10257390), (3, 6838260), (4, 5128695), (5, 4102956), (6, 3419130), (9, 2279420), (10, 2051478), (11, 1864980), (12, 1709565), (13, 1578060), (15, 1367652), (18, 1139710), (20, 1025739), (22, 932490), (26, 789030), (30, 683826), (33, 621660), (36, 569855), (39, 526020), (44, 466245), (45, 455884), (52, 394515), (55, 372996), (60, 341913), (65, 315612), (66, 310830), (78, 263010), (90, 227942), (99, 207220), (110, 186498), (117, 175340), (130, 157806), (132, 155415), (143, 143460), (156, 131505), (165, 124332), (180, 113971), (195, 105204), (198, 103610), (220, 93249), (234, 87670), (260, 78903), (286, 71730), (330, 62166), (390, 52602), (396, 51805), (429, 47820), (468, 43835), (495, 41444), (572, 35865), (585, 35068), (660, 31083), (715, 28692), (780, 26301), (797, 25740), (858, 23910), (990, 20722), (1170, 17534), (1287, 15940), (1430, 14346), (1594, 12870), (1716, 11955), (1980, 10361), (2145, 9564), (2340, 8767), (2391, 8580), (2574, 7970), (2860, 7173), (3188, 6435), (3985, 5148), (4290, 4782)]