71661880

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{6971}}^1$

素因数の和:7239

約数の個数: 32

約数和(自身を含む): 161889840

約数和(自身を除く): 90227960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 6971, 10280, 13942, 27884, 34855, 55768, 69710, 139420, 278840, 1791547, 3583094, 7166188, 8957735, 14332376, 17915470, 35830940, 71661880]

約数ペア:

[(1, 71661880), (2, 35830940), (4, 17915470), (5, 14332376), (8, 8957735), (10, 7166188), (20, 3583094), (40, 1791547), (257, 278840), (514, 139420), (1028, 69710), (1285, 55768), (2056, 34855), (2570, 27884), (5140, 13942), (6971, 10280)]