399447020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{407599}}^1$

素因数の和:407622

約数の個数: 36

約数和(自身を含む): 975794400

約数和(自身を除く): 576347380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 407599, 815198, 1630396, 2037995, 2853193, 4075990, 5706386, 8151980, 11412772, 14265965, 19972351, 28531930, 39944702, 57063860, 79889404, 99861755, 199723510, 399447020]

約数ペア:

[(1, 399447020), (2, 199723510), (4, 99861755), (5, 79889404), (7, 57063860), (10, 39944702), (14, 28531930), (20, 19972351), (28, 14265965), (35, 11412772), (49, 8151980), (70, 5706386), (98, 4075990), (140, 2853193), (196, 2037995), (245, 1630396), (490, 815198), (980, 407599)]