31396180

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{641}}^1$

素因数の和:760

約数の個数: 48

約数和(自身を含む): 69027840

約数和(自身を除く): 37631660

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 79, 124, 155, 158, 310, 316, 395, 620, 641, 790, 1282, 1580, 2449, 2564, 3205, 4898, 6410, 9796, 12245, 12820, 19871, 24490, 39742, 48980, 50639, 79484, 99355, 101278, 198710, 202556, 253195, 397420, 506390, 1012780, 1569809, 3139618, 6279236, 7849045, 15698090, 31396180]

約数ペア:

[(1, 31396180), (2, 15698090), (4, 7849045), (5, 6279236), (10, 3139618), (20, 1569809), (31, 1012780), (62, 506390), (79, 397420), (124, 253195), (155, 202556), (158, 198710), (310, 101278), (316, 99355), (395, 79484), (620, 50639), (641, 48980), (790, 39742), (1282, 24490), (1580, 19871), (2449, 12820), (2564, 12245), (3205, 9796), (4898, 6410)]