28201940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3499}}^1$

素因数の和:3552

約数の個数: 48

約数和(自身を含む): 65856000

約数和(自身を除く): 37654060

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 3499, 4030, 6998, 8060, 13996, 17495, 34990, 45487, 69980, 90974, 108469, 181948, 216938, 227435, 433876, 454870, 542345, 909740, 1084690, 1410097, 2169380, 2820194, 5640388, 7050485, 14100970, 28201940]

約数ペア:

[(1, 28201940), (2, 14100970), (4, 7050485), (5, 5640388), (10, 2820194), (13, 2169380), (20, 1410097), (26, 1084690), (31, 909740), (52, 542345), (62, 454870), (65, 433876), (124, 227435), (130, 216938), (155, 181948), (260, 108469), (310, 90974), (403, 69980), (620, 45487), (806, 34990), (1612, 17495), (2015, 13996), (3499, 8060), (4030, 6998)]