81597920

素因数分解:

$2^5\times 5^1\times {\mathrm{211}}^1\times {\mathrm{2417}}^1$

素因数の和:2643

約数の個数: 48

約数和(自身を含む): 193768848

約数和(自身を除く): 112170928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 211, 422, 844, 1055, 1688, 2110, 2417, 3376, 4220, 4834, 6752, 8440, 9668, 12085, 16880, 19336, 24170, 33760, 38672, 48340, 77344, 96680, 193360, 386720, 509987, 1019974, 2039948, 2549935, 4079896, 5099870, 8159792, 10199740, 16319584, 20399480, 40798960, 81597920]

約数ペア:

[(1, 81597920), (2, 40798960), (4, 20399480), (5, 16319584), (8, 10199740), (10, 8159792), (16, 5099870), (20, 4079896), (32, 2549935), (40, 2039948), (80, 1019974), (160, 509987), (211, 386720), (422, 193360), (844, 96680), (1055, 77344), (1688, 48340), (2110, 38672), (2417, 33760), (3376, 24170), (4220, 19336), (4834, 16880), (6752, 12085), (8440, 9668)]