31494140

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{643}}^1$

素因数の和:762

約数の個数: 48

約数和(自身を含む): 69242880

約数和(自身を除く): 37748740

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 79, 124, 155, 158, 310, 316, 395, 620, 643, 790, 1286, 1580, 2449, 2572, 3215, 4898, 6430, 9796, 12245, 12860, 19933, 24490, 39866, 48980, 50797, 79732, 99665, 101594, 199330, 203188, 253985, 398660, 507970, 1015940, 1574707, 3149414, 6298828, 7873535, 15747070, 31494140]

約数ペア:

[(1, 31494140), (2, 15747070), (4, 7873535), (5, 6298828), (10, 3149414), (20, 1574707), (31, 1015940), (62, 507970), (79, 398660), (124, 253985), (155, 203188), (158, 199330), (310, 101594), (316, 99665), (395, 79732), (620, 50797), (643, 48980), (790, 39866), (1286, 24490), (1580, 19933), (2449, 12860), (2572, 12245), (3215, 9796), (4898, 6430)]