64489280

素因数分解:

$2^6\times 5^1\times {\mathrm{79}}^1\times {\mathrm{2551}}^1$

素因数の和:2647

約数の個数: 56

約数和(自身を含む): 155569920

約数和(自身を除く): 91080640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 158, 160, 316, 320, 395, 632, 790, 1264, 1580, 2528, 2551, 3160, 5056, 5102, 6320, 10204, 12640, 12755, 20408, 25280, 25510, 40816, 51020, 81632, 102040, 163264, 201529, 204080, 403058, 408160, 806116, 816320, 1007645, 1612232, 2015290, 3224464, 4030580, 6448928, 8061160, 12897856, 16122320, 32244640, 64489280]

約数ペア:

[(1, 64489280), (2, 32244640), (4, 16122320), (5, 12897856), (8, 8061160), (10, 6448928), (16, 4030580), (20, 3224464), (32, 2015290), (40, 1612232), (64, 1007645), (79, 816320), (80, 806116), (158, 408160), (160, 403058), (316, 204080), (320, 201529), (395, 163264), (632, 102040), (790, 81632), (1264, 51020), (1580, 40816), (2528, 25510), (2551, 25280), (3160, 20408), (5056, 12755), (5102, 12640), (6320, 10204)]