20680218945

素因数分解:

$3^4\times 5^1\times {\mathrm{2161}}^1\times {\mathrm{23629}}^1$

素因数の和:25807

約数の個数: 40

約数和(自身を含む): 37089931560

約数和(自身を除く): 16409712615

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 2161, 6483, 10805, 19449, 23629, 32415, 58347, 70887, 97245, 118145, 175041, 212661, 291735, 354435, 637983, 875205, 1063305, 1913949, 3189915, 9569745, 51062269, 153186807, 255311345, 459560421, 765934035, 1378681263, 2297802105, 4136043789, 6893406315, 20680218945]

約数ペア:

[(1, 20680218945), (3, 6893406315), (5, 4136043789), (9, 2297802105), (15, 1378681263), (27, 765934035), (45, 459560421), (81, 255311345), (135, 153186807), (405, 51062269), (2161, 9569745), (6483, 3189915), (10805, 1913949), (19449, 1063305), (23629, 875205), (32415, 637983), (58347, 354435), (70887, 291735), (97245, 212661), (118145, 175041)]