20481084

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{409}}^1$

素因数の和:539

約数の個数: 72

約数和(自身を含む): 56412720

約数和(自身を除く): 35931636

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 107, 117, 156, 214, 234, 321, 409, 428, 468, 642, 818, 963, 1227, 1284, 1391, 1636, 1926, 2454, 2782, 3681, 3852, 4173, 4908, 5317, 5564, 7362, 8346, 10634, 12519, 14724, 15951, 16692, 21268, 25038, 31902, 43763, 47853, 50076, 63804, 87526, 95706, 131289, 175052, 191412, 262578, 393867, 525156, 568919, 787734, 1137838, 1575468, 1706757, 2275676, 3413514, 5120271, 6827028, 10240542, 20481084]

約数ペア:

[(1, 20481084), (2, 10240542), (3, 6827028), (4, 5120271), (6, 3413514), (9, 2275676), (12, 1706757), (13, 1575468), (18, 1137838), (26, 787734), (36, 568919), (39, 525156), (52, 393867), (78, 262578), (107, 191412), (117, 175052), (156, 131289), (214, 95706), (234, 87526), (321, 63804), (409, 50076), (428, 47853), (468, 43763), (642, 31902), (818, 25038), (963, 21268), (1227, 16692), (1284, 15951), (1391, 14724), (1636, 12519), (1926, 10634), (2454, 8346), (2782, 7362), (3681, 5564), (3852, 5317), (4173, 4908)]