305912020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1\times {\mathrm{1021}}^1$

素因数の和:1312

約数の個数: 48

約数和(自身を含む): 655191936

約数和(自身を除く): 349279916

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 211, 284, 355, 422, 710, 844, 1021, 1055, 1420, 2042, 2110, 4084, 4220, 5105, 10210, 14981, 20420, 29962, 59924, 72491, 74905, 144982, 149810, 215431, 289964, 299620, 362455, 430862, 724910, 861724, 1077155, 1449820, 2154310, 4308620, 15295601, 30591202, 61182404, 76478005, 152956010, 305912020]

約数ペア:

[(1, 305912020), (2, 152956010), (4, 76478005), (5, 61182404), (10, 30591202), (20, 15295601), (71, 4308620), (142, 2154310), (211, 1449820), (284, 1077155), (355, 861724), (422, 724910), (710, 430862), (844, 362455), (1021, 299620), (1055, 289964), (1420, 215431), (2042, 149810), (2110, 144982), (4084, 74905), (4220, 72491), (5105, 59924), (10210, 29962), (14981, 20420)]