639872177540

素因数分解:

$2^2\times 5^1\times {\mathrm{691}}^1\times {\mathrm{46300447}}^1$

素因数の和:46301147

約数の個数: 24

約数和(自身を含む): 1345676220672

約数和(自身を除く): 705804043132

約数列:

[1, 2, 4, 5, 10, 20, 691, 1382, 2764, 3455, 6910, 13820, 46300447, 92600894, 185201788, 231502235, 463004470, 926008940, 31993608877, 63987217754, 127974435508, 159968044385, 319936088770, 639872177540]

約数ペア:

[(1, 639872177540), (2, 319936088770), (4, 159968044385), (5, 127974435508), (10, 63987217754), (20, 31993608877), (691, 926008940), (1382, 463004470), (2764, 231502235), (3455, 185201788), (6910, 92600894), (13820, 46300447)]