18439538

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{229}}^1$

素因数の和:426

約数の個数: 32

約数和(自身を含む): 31684800

約数和(自身を除く): 13245262

約数列:

[1, 2, 13, 19, 26, 38, 163, 229, 247, 326, 458, 494, 2119, 2977, 3097, 4238, 4351, 5954, 6194, 8702, 37327, 40261, 56563, 74654, 80522, 113126, 485251, 709213, 970502, 1418426, 9219769, 18439538]

約数ペア:

[(1, 18439538), (2, 9219769), (13, 1418426), (19, 970502), (26, 709213), (38, 485251), (163, 113126), (229, 80522), (247, 74654), (326, 56563), (458, 40261), (494, 37327), (2119, 8702), (2977, 6194), (3097, 5954), (4238, 4351)]