64988540

素因数分解:

$2^2\times 5^1\times {\mathrm{331}}^1\times {\mathrm{9817}}^1$

素因数の和:10157

約数の個数: 24

約数和(自身を含む): 136902192

約数和(自身を除く): 71913652

約数列:

[1, 2, 4, 5, 10, 20, 331, 662, 1324, 1655, 3310, 6620, 9817, 19634, 39268, 49085, 98170, 196340, 3249427, 6498854, 12997708, 16247135, 32494270, 64988540]

約数ペア:

[(1, 64988540), (2, 32494270), (4, 16247135), (5, 12997708), (10, 6498854), (20, 3249427), (331, 196340), (662, 98170), (1324, 49085), (1655, 39268), (3310, 19634), (6620, 9817)]