13616440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:260

約数の個数: 64

約数和(自身を含む): 32256000

約数和(自身を除く): 18639560

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 79, 124, 139, 155, 158, 248, 278, 310, 316, 395, 556, 620, 632, 695, 790, 1112, 1240, 1390, 1580, 2449, 2780, 3160, 4309, 4898, 5560, 8618, 9796, 10981, 12245, 17236, 19592, 21545, 21962, 24490, 34472, 43090, 43924, 48980, 54905, 86180, 87848, 97960, 109810, 172360, 219620, 340411, 439240, 680822, 1361644, 1702055, 2723288, 3404110, 6808220, 13616440]

約数ペア:

[(1, 13616440), (2, 6808220), (4, 3404110), (5, 2723288), (8, 1702055), (10, 1361644), (20, 680822), (31, 439240), (40, 340411), (62, 219620), (79, 172360), (124, 109810), (139, 97960), (155, 87848), (158, 86180), (248, 54905), (278, 48980), (310, 43924), (316, 43090), (395, 34472), (556, 24490), (620, 21962), (632, 21545), (695, 19592), (790, 17236), (1112, 12245), (1240, 10981), (1390, 9796), (1580, 8618), (2449, 5560), (2780, 4898), (3160, 4309)]