18937580

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{317}}^1$

素因数の和:458

約数の個数: 48

約数和(自身を含む): 41670720

約数和(自身を除く): 22733140

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 103, 116, 145, 206, 290, 317, 412, 515, 580, 634, 1030, 1268, 1585, 2060, 2987, 3170, 5974, 6340, 9193, 11948, 14935, 18386, 29870, 32651, 36772, 45965, 59740, 65302, 91930, 130604, 163255, 183860, 326510, 653020, 946879, 1893758, 3787516, 4734395, 9468790, 18937580]

約数ペア:

[(1, 18937580), (2, 9468790), (4, 4734395), (5, 3787516), (10, 1893758), (20, 946879), (29, 653020), (58, 326510), (103, 183860), (116, 163255), (145, 130604), (206, 91930), (290, 65302), (317, 59740), (412, 45965), (515, 36772), (580, 32651), (634, 29870), (1030, 18386), (1268, 14935), (1585, 11948), (2060, 9193), (2987, 6340), (3170, 5974)]