645624339968

素因数分解:

$2^9\times {\mathrm{1260985039}}^1$

素因数の和:1260985057

約数の個数: 20

約数和(自身を含む): 1289987695920

約数和(自身を除く): 644363355952

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1260985039, 2521970078, 5043940156, 10087880312, 20175760624, 40351521248, 80703042496, 161406084992, 322812169984, 645624339968]

約数ペア:

[(1, 645624339968), (2, 322812169984), (4, 161406084992), (8, 80703042496), (16, 40351521248), (32, 20175760624), (64, 10087880312), (128, 5043940156), (256, 2521970078), (512, 1260985039)]