688820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:152

約数の個数: 48

約数和(自身を含む): 1645056

約数和(自身を除く): 956236

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 101, 110, 124, 155, 202, 220, 310, 341, 404, 505, 620, 682, 1010, 1111, 1364, 1705, 2020, 2222, 3131, 3410, 4444, 5555, 6262, 6820, 11110, 12524, 15655, 22220, 31310, 34441, 62620, 68882, 137764, 172205, 344410, 688820]

約数ペア:

[(1, 688820), (2, 344410), (4, 172205), (5, 137764), (10, 68882), (11, 62620), (20, 34441), (22, 31310), (31, 22220), (44, 15655), (55, 12524), (62, 11110), (101, 6820), (110, 6262), (124, 5555), (155, 4444), (202, 3410), (220, 3131), (310, 2222), (341, 2020), (404, 1705), (505, 1364), (620, 1111), (682, 1010)]