23811980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{409}}^1$

素因数の和:530

約数の個数: 48

約数和(自身を含む): 52073280

約数和(自身を除く): 28261300

約数列:

[1, 2, 4, 5, 10, 20, 41, 71, 82, 142, 164, 205, 284, 355, 409, 410, 710, 818, 820, 1420, 1636, 2045, 2911, 4090, 5822, 8180, 11644, 14555, 16769, 29039, 29110, 33538, 58078, 58220, 67076, 83845, 116156, 145195, 167690, 290390, 335380, 580780, 1190599, 2381198, 4762396, 5952995, 11905990, 23811980]

約数ペア:

[(1, 23811980), (2, 11905990), (4, 5952995), (5, 4762396), (10, 2381198), (20, 1190599), (41, 580780), (71, 335380), (82, 290390), (142, 167690), (164, 145195), (205, 116156), (284, 83845), (355, 67076), (409, 58220), (410, 58078), (710, 33538), (818, 29110), (820, 29039), (1420, 16769), (1636, 14555), (2045, 11644), (2911, 8180), (4090, 5822)]