818620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^2$

素因数の和:142

約数の個数: 36

約数和(自身を含む): 1906632

約数和(自身を除く): 1088012

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 61, 110, 122, 220, 244, 305, 610, 671, 1220, 1342, 2684, 3355, 3721, 6710, 7442, 13420, 14884, 18605, 37210, 40931, 74420, 81862, 163724, 204655, 409310, 818620]

約数ペア:

[(1, 818620), (2, 409310), (4, 204655), (5, 163724), (10, 81862), (11, 74420), (20, 40931), (22, 37210), (44, 18605), (55, 14884), (61, 13420), (110, 7442), (122, 6710), (220, 3721), (244, 3355), (305, 2684), (610, 1342), (671, 1220)]