538780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:130

約数の個数: 48

約数和(自身を含む): 1290240

約数和(自身を除く): 751460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 79, 110, 124, 155, 158, 220, 310, 316, 341, 395, 620, 682, 790, 869, 1364, 1580, 1705, 1738, 2449, 3410, 3476, 4345, 4898, 6820, 8690, 9796, 12245, 17380, 24490, 26939, 48980, 53878, 107756, 134695, 269390, 538780]

約数ペア:

[(1, 538780), (2, 269390), (4, 134695), (5, 107756), (10, 53878), (11, 48980), (20, 26939), (22, 24490), (31, 17380), (44, 12245), (55, 9796), (62, 8690), (79, 6820), (110, 4898), (124, 4345), (155, 3476), (158, 3410), (220, 2449), (310, 1738), (316, 1705), (341, 1580), (395, 1364), (620, 869), (682, 790)]