64986280

素因数分解:

$2^3\times 5^1\times {\mathrm{1097}}^1\times {\mathrm{1481}}^1$

素因数の和:2589

約数の個数: 32

約数和(自身を含む): 146451240

約数和(自身を除く): 81464960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1097, 1481, 2194, 2962, 4388, 5485, 5924, 7405, 8776, 10970, 11848, 14810, 21940, 29620, 43880, 59240, 1624657, 3249314, 6498628, 8123285, 12997256, 16246570, 32493140, 64986280]

約数ペア:

[(1, 64986280), (2, 32493140), (4, 16246570), (5, 12997256), (8, 8123285), (10, 6498628), (20, 3249314), (40, 1624657), (1097, 59240), (1481, 43880), (2194, 29620), (2962, 21940), (4388, 14810), (5485, 11848), (5924, 10970), (7405, 8776)]