12400000040

素因数分解:

$2^3\times 5^1\times {\mathrm{1171}}^1\times {\mathrm{264731}}^1$

素因数の和:265913

約数の個数: 32

約数和(自身を含む): 27923931360

約数和(自身を除く): 15523931320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1171, 2342, 4684, 5855, 9368, 11710, 23420, 46840, 264731, 529462, 1058924, 1323655, 2117848, 2647310, 5294620, 10589240, 310000001, 620000002, 1240000004, 1550000005, 2480000008, 3100000010, 6200000020, 12400000040]

約数ペア:

[(1, 12400000040), (2, 6200000020), (4, 3100000010), (5, 2480000008), (8, 1550000005), (10, 1240000004), (20, 620000002), (40, 310000001), (1171, 10589240), (2342, 5294620), (4684, 2647310), (5855, 2117848), (9368, 1323655), (11710, 1058924), (23420, 529462), (46840, 264731)]