639885

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1471}}^1$

素因数の和:1508

約数の個数: 16

約数和(自身を含む): 1059840

約数和(自身を除く): 419955

約数列:

[1, 3, 5, 15, 29, 87, 145, 435, 1471, 4413, 7355, 22065, 42659, 127977, 213295, 639885]

約数ペア:

[(1, 639885), (3, 213295), (5, 127977), (15, 42659), (29, 22065), (87, 7355), (145, 4413), (435, 1471)]