20821956

素因数分解:

$2^2\times 3^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1\times {\mathrm{251}}^1$

素因数の和:512

約数の個数: 48

約数和(自身を含む): 50577408

約数和(自身を除く): 29755452

約数列:

[1, 2, 3, 4, 6, 12, 31, 62, 93, 124, 186, 223, 251, 372, 446, 502, 669, 753, 892, 1004, 1338, 1506, 2676, 3012, 6913, 7781, 13826, 15562, 20739, 23343, 27652, 31124, 41478, 46686, 55973, 82956, 93372, 111946, 167919, 223892, 335838, 671676, 1735163, 3470326, 5205489, 6940652, 10410978, 20821956]

約数ペア:

[(1, 20821956), (2, 10410978), (3, 6940652), (4, 5205489), (6, 3470326), (12, 1735163), (31, 671676), (62, 335838), (93, 223892), (124, 167919), (186, 111946), (223, 93372), (251, 82956), (372, 55973), (446, 46686), (502, 41478), (669, 31124), (753, 27652), (892, 23343), (1004, 20739), (1338, 15562), (1506, 13826), (2676, 7781), (3012, 6913)]