25999420

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{211}}^1$

素因数の和:382

約数の個数: 48

約数和(自身を含む): 56308896

約数和(自身を除く): 30309476

約数列:

[1, 2, 4, 5, 10, 20, 61, 101, 122, 202, 211, 244, 305, 404, 422, 505, 610, 844, 1010, 1055, 1220, 2020, 2110, 4220, 6161, 12322, 12871, 21311, 24644, 25742, 30805, 42622, 51484, 61610, 64355, 85244, 106555, 123220, 128710, 213110, 257420, 426220, 1299971, 2599942, 5199884, 6499855, 12999710, 25999420]

約数ペア:

[(1, 25999420), (2, 12999710), (4, 6499855), (5, 5199884), (10, 2599942), (20, 1299971), (61, 426220), (101, 257420), (122, 213110), (202, 128710), (211, 123220), (244, 106555), (305, 85244), (404, 64355), (422, 61610), (505, 51484), (610, 42622), (844, 30805), (1010, 25742), (1055, 24644), (1220, 21311), (2020, 12871), (2110, 12322), (4220, 6161)]