20878416

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{587}}^1$

素因数の和:633

約数の個数: 120

約数和(自身を含む): 66349920

約数和(自身を除く): 45471504

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 19, 24, 26, 36, 38, 39, 48, 52, 57, 72, 76, 78, 104, 114, 117, 144, 152, 156, 171, 208, 228, 234, 247, 304, 312, 342, 456, 468, 494, 587, 624, 684, 741, 912, 936, 988, 1174, 1368, 1482, 1761, 1872, 1976, 2223, 2348, 2736, 2964, 3522, 3952, 4446, 4696, 5283, 5928, 7044, 7631, 8892, 9392, 10566, 11153, 11856, 14088, 15262, 17784, 21132, 22306, 22893, 28176, 30524, 33459, 35568, 42264, 44612, 45786, 61048, 66918, 68679, 84528, 89224, 91572, 100377, 122096, 133836, 137358, 144989, 178448, 183144, 200754, 267672, 274716, 289978, 366288, 401508, 434967, 535344, 549432, 579956, 803016, 869934, 1098864, 1159912, 1304901, 1606032, 1739868, 2319824, 2609802, 3479736, 5219604, 6959472, 10439208, 20878416]

約数ペア:

[(1, 20878416), (2, 10439208), (3, 6959472), (4, 5219604), (6, 3479736), (8, 2609802), (9, 2319824), (12, 1739868), (13, 1606032), (16, 1304901), (18, 1159912), (19, 1098864), (24, 869934), (26, 803016), (36, 579956), (38, 549432), (39, 535344), (48, 434967), (52, 401508), (57, 366288), (72, 289978), (76, 274716), (78, 267672), (104, 200754), (114, 183144), (117, 178448), (144, 144989), (152, 137358), (156, 133836), (171, 122096), (208, 100377), (228, 91572), (234, 89224), (247, 84528), (304, 68679), (312, 66918), (342, 61048), (456, 45786), (468, 44612), (494, 42264), (587, 35568), (624, 33459), (684, 30524), (741, 28176), (912, 22893), (936, 22306), (988, 21132), (1174, 17784), (1368, 15262), (1482, 14088), (1761, 11856), (1872, 11153), (1976, 10566), (2223, 9392), (2348, 8892), (2736, 7631), (2964, 7044), (3522, 5928), (3952, 5283), (4446, 4696)]