15753980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{709}}^1$

素因数の和:830

約数の個数: 48

約数和(自身を含む): 36499680

約数和(自身を除く): 20745700

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 101, 110, 202, 220, 404, 505, 709, 1010, 1111, 1418, 2020, 2222, 2836, 3545, 4444, 5555, 7090, 7799, 11110, 14180, 15598, 22220, 31196, 38995, 71609, 77990, 143218, 155980, 286436, 358045, 716090, 787699, 1432180, 1575398, 3150796, 3938495, 7876990, 15753980]

約数ペア:

[(1, 15753980), (2, 7876990), (4, 3938495), (5, 3150796), (10, 1575398), (11, 1432180), (20, 787699), (22, 716090), (44, 358045), (55, 286436), (101, 155980), (110, 143218), (202, 77990), (220, 71609), (404, 38995), (505, 31196), (709, 22220), (1010, 15598), (1111, 14180), (1418, 11110), (2020, 7799), (2222, 7090), (2836, 5555), (3545, 4444)]