399664020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{951581}}^1$

素因数の和:951600

約数の個数: 48

約数和(自身を含む): 1278926208

約数和(自身を除く): 879262188

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 951581, 1903162, 2854743, 3806324, 4757905, 5709486, 6661067, 9515810, 11418972, 13322134, 14273715, 19031620, 19983201, 26644268, 28547430, 33305335, 39966402, 57094860, 66610670, 79932804, 99916005, 133221340, 199832010, 399664020]

約数ペア:

[(1, 399664020), (2, 199832010), (3, 133221340), (4, 99916005), (5, 79932804), (6, 66610670), (7, 57094860), (10, 39966402), (12, 33305335), (14, 28547430), (15, 26644268), (20, 19983201), (21, 19031620), (28, 14273715), (30, 13322134), (35, 11418972), (42, 9515810), (60, 6661067), (70, 5709486), (84, 4757905), (105, 3806324), (140, 2854743), (210, 1903162), (420, 951581)]