20688007790

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{66735509}}^1$

素因数の和:66735547

約数の個数: 16

約数和(自身を含む): 38439653760

約数和(自身を除く): 17751645970

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 66735509, 133471018, 333677545, 667355090, 2068800779, 4137601558, 10344003895, 20688007790]

約数ペア:

[(1, 20688007790), (2, 10344003895), (5, 4137601558), (10, 2068800779), (31, 667355090), (62, 333677545), (155, 133471018), (310, 66735509)]