636701020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{23599}}^1$

素因数の和:23698

約数の個数: 48

約数和(自身を含む): 1427328000

約数和(自身を除く): 790626980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 71, 76, 95, 142, 190, 284, 355, 380, 710, 1349, 1420, 2698, 5396, 6745, 13490, 23599, 26980, 47198, 94396, 117995, 235990, 448381, 471980, 896762, 1675529, 1793524, 2241905, 3351058, 4483810, 6702116, 8377645, 8967620, 16755290, 31835051, 33510580, 63670102, 127340204, 159175255, 318350510, 636701020]

約数ペア:

[(1, 636701020), (2, 318350510), (4, 159175255), (5, 127340204), (10, 63670102), (19, 33510580), (20, 31835051), (38, 16755290), (71, 8967620), (76, 8377645), (95, 6702116), (142, 4483810), (190, 3351058), (284, 2241905), (355, 1793524), (380, 1675529), (710, 896762), (1349, 471980), (1420, 448381), (2698, 235990), (5396, 117995), (6745, 94396), (13490, 47198), (23599, 26980)]