64639620

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{39901}}^1$

素因数の和:39922

約数の個数: 60

約数和(自身を含む): 202781964

約数和(自身を除く): 138142344

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 39901, 79802, 119703, 159604, 199505, 239406, 359109, 399010, 478812, 598515, 718218, 798020, 1077327, 1197030, 1436436, 1795545, 2154654, 2394060, 3231981, 3591090, 4309308, 5386635, 6463962, 7182180, 10773270, 12927924, 16159905, 21546540, 32319810, 64639620]

約数ペア:

[(1, 64639620), (2, 32319810), (3, 21546540), (4, 16159905), (5, 12927924), (6, 10773270), (9, 7182180), (10, 6463962), (12, 5386635), (15, 4309308), (18, 3591090), (20, 3231981), (27, 2394060), (30, 2154654), (36, 1795545), (45, 1436436), (54, 1197030), (60, 1077327), (81, 798020), (90, 718218), (108, 598515), (135, 478812), (162, 399010), (180, 359109), (270, 239406), (324, 199505), (405, 159604), (540, 119703), (810, 79802), (1620, 39901)]