690580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:136

約数の個数: 48

約数和(自身を含む): 1641024

約数和(自身を除く): 950444

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 73, 86, 110, 146, 172, 215, 220, 292, 365, 430, 473, 730, 803, 860, 946, 1460, 1606, 1892, 2365, 3139, 3212, 4015, 4730, 6278, 8030, 9460, 12556, 15695, 16060, 31390, 34529, 62780, 69058, 138116, 172645, 345290, 690580]

約数ペア:

[(1, 690580), (2, 345290), (4, 172645), (5, 138116), (10, 69058), (11, 62780), (20, 34529), (22, 31390), (43, 16060), (44, 15695), (55, 12556), (73, 9460), (86, 8030), (110, 6278), (146, 4730), (172, 4015), (215, 3212), (220, 3139), (292, 2365), (365, 1892), (430, 1606), (473, 1460), (730, 946), (803, 860)]