28686680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{5927}}^1$

素因数の和:5960

約数の個数: 48

約数和(自身を含む): 70958160

約数和(自身を除く): 42271480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 4840, 5927, 11854, 23708, 29635, 47416, 59270, 65197, 118540, 130394, 237080, 260788, 325985, 521576, 651970, 717167, 1303940, 1434334, 2607880, 2868668, 3585835, 5737336, 7171670, 14343340, 28686680]

約数ペア:

[(1, 28686680), (2, 14343340), (4, 7171670), (5, 5737336), (8, 3585835), (10, 2868668), (11, 2607880), (20, 1434334), (22, 1303940), (40, 717167), (44, 651970), (55, 521576), (88, 325985), (110, 260788), (121, 237080), (220, 130394), (242, 118540), (440, 65197), (484, 59270), (605, 47416), (968, 29635), (1210, 23708), (2420, 11854), (4840, 5927)]