640599988

素因数分解:

$2^2\times 7^1\times {\mathrm{4621}}^1\times {\mathrm{4951}}^1$

素因数の和:9583

約数の個数: 24

約数和(自身を含む): 1281736064

約数和(自身を除く): 641136076

約数列:

[1, 2, 4, 7, 14, 28, 4621, 4951, 9242, 9902, 18484, 19804, 32347, 34657, 64694, 69314, 129388, 138628, 22878571, 45757142, 91514284, 160149997, 320299994, 640599988]

約数ペア:

[(1, 640599988), (2, 320299994), (4, 160149997), (7, 91514284), (14, 45757142), (28, 22878571), (4621, 138628), (4951, 129388), (9242, 69314), (9902, 64694), (18484, 34657), (19804, 32347)]