38999740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{2459}}^1$

素因数の和:2542

約数の個数: 48

約数和(自身を含む): 89681760

約数和(自身を除く): 50682020

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 305, 610, 793, 1220, 1586, 2459, 3172, 3965, 4918, 7930, 9836, 12295, 15860, 24590, 31967, 49180, 63934, 127868, 149999, 159835, 299998, 319670, 599996, 639340, 749995, 1499990, 1949987, 2999980, 3899974, 7799948, 9749935, 19499870, 38999740]

約数ペア:

[(1, 38999740), (2, 19499870), (4, 9749935), (5, 7799948), (10, 3899974), (13, 2999980), (20, 1949987), (26, 1499990), (52, 749995), (61, 639340), (65, 599996), (122, 319670), (130, 299998), (244, 159835), (260, 149999), (305, 127868), (610, 63934), (793, 49180), (1220, 31967), (1586, 24590), (2459, 15860), (3172, 12295), (3965, 9836), (4918, 7930)]