20210140

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{881}}^1$

素因数の和:958

約数の個数: 48

約数和(自身を含む): 45045504

約数和(自身を除く): 24835364

約数列:

[1, 2, 4, 5, 10, 20, 31, 37, 62, 74, 124, 148, 155, 185, 310, 370, 620, 740, 881, 1147, 1762, 2294, 3524, 4405, 4588, 5735, 8810, 11470, 17620, 22940, 27311, 32597, 54622, 65194, 109244, 130388, 136555, 162985, 273110, 325970, 546220, 651940, 1010507, 2021014, 4042028, 5052535, 10105070, 20210140]

約数ペア:

[(1, 20210140), (2, 10105070), (4, 5052535), (5, 4042028), (10, 2021014), (20, 1010507), (31, 651940), (37, 546220), (62, 325970), (74, 273110), (124, 162985), (148, 136555), (155, 130388), (185, 109244), (310, 65194), (370, 54622), (620, 32597), (740, 27311), (881, 22940), (1147, 17620), (1762, 11470), (2294, 8810), (3524, 5735), (4405, 4588)]