31965830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:249

約数の個数: 64

約数和(自身を含む): 65620800

約数和(自身を除く): 33654970

約数列:

[1, 2, 5, 10, 13, 26, 29, 58, 61, 65, 122, 130, 139, 145, 278, 290, 305, 377, 610, 695, 754, 793, 1390, 1586, 1769, 1807, 1885, 3538, 3614, 3770, 3965, 4031, 7930, 8062, 8479, 8845, 9035, 16958, 17690, 18070, 20155, 22997, 40310, 42395, 45994, 52403, 84790, 104806, 110227, 114985, 220454, 229970, 245891, 262015, 491782, 524030, 551135, 1102270, 1229455, 2458910, 3196583, 6393166, 15982915, 31965830]

約数ペア:

[(1, 31965830), (2, 15982915), (5, 6393166), (10, 3196583), (13, 2458910), (26, 1229455), (29, 1102270), (58, 551135), (61, 524030), (65, 491782), (122, 262015), (130, 245891), (139, 229970), (145, 220454), (278, 114985), (290, 110227), (305, 104806), (377, 84790), (610, 52403), (695, 45994), (754, 42395), (793, 40310), (1390, 22997), (1586, 20155), (1769, 18070), (1807, 17690), (1885, 16958), (3538, 9035), (3614, 8845), (3770, 8479), (3965, 8062), (4031, 7930)]