64638320

素因数分解:

$2^4\times 5^1\times {\mathrm{827}}^1\times {\mathrm{977}}^1$

素因数の和:1817

約数の個数: 40

約数和(自身を含む): 150619824

約数和(自身を除く): 85981504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 827, 977, 1654, 1954, 3308, 3908, 4135, 4885, 6616, 7816, 8270, 9770, 13232, 15632, 16540, 19540, 33080, 39080, 66160, 78160, 807979, 1615958, 3231916, 4039895, 6463832, 8079790, 12927664, 16159580, 32319160, 64638320]

約数ペア:

[(1, 64638320), (2, 32319160), (4, 16159580), (5, 12927664), (8, 8079790), (10, 6463832), (16, 4039895), (20, 3231916), (40, 1615958), (80, 807979), (827, 78160), (977, 66160), (1654, 39080), (1954, 33080), (3308, 19540), (3908, 16540), (4135, 15632), (4885, 13232), (6616, 9770), (7816, 8270)]