15838040

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{6491}}^1$

素因数の和:6563

約数の個数: 32

約数和(自身を含む): 36225360

約数和(自身を除く): 20387320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 6491, 12982, 25964, 32455, 51928, 64910, 129820, 259640, 395951, 791902, 1583804, 1979755, 3167608, 3959510, 7919020, 15838040]

約数ペア:

[(1, 15838040), (2, 7919020), (4, 3959510), (5, 3167608), (8, 1979755), (10, 1583804), (20, 791902), (40, 395951), (61, 259640), (122, 129820), (244, 64910), (305, 51928), (488, 32455), (610, 25964), (1220, 12982), (2440, 6491)]