129959740

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{991}}^1$

素因数の和:1162

約数の個数: 48

約数和(自身を含む): 279982080

約数和(自身を除く): 150022340

約数列:

[1, 2, 4, 5, 10, 20, 79, 83, 158, 166, 316, 332, 395, 415, 790, 830, 991, 1580, 1660, 1982, 3964, 4955, 6557, 9910, 13114, 19820, 26228, 32785, 65570, 78289, 82253, 131140, 156578, 164506, 313156, 329012, 391445, 411265, 782890, 822530, 1565780, 1645060, 6497987, 12995974, 25991948, 32489935, 64979870, 129959740]

約数ペア:

[(1, 129959740), (2, 64979870), (4, 32489935), (5, 25991948), (10, 12995974), (20, 6497987), (79, 1645060), (83, 1565780), (158, 822530), (166, 782890), (316, 411265), (332, 391445), (395, 329012), (415, 313156), (790, 164506), (830, 156578), (991, 131140), (1580, 82253), (1660, 78289), (1982, 65570), (3964, 32785), (4955, 26228), (6557, 19820), (9910, 13114)]