390702920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{315083}}^1$

素因数の和:315125

約数の個数: 32

約数和(自身を含む): 907441920

約数和(自身を除く): 516739000

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 315083, 630166, 1260332, 1575415, 2520664, 3150830, 6301660, 9767573, 12603320, 19535146, 39070292, 48837865, 78140584, 97675730, 195351460, 390702920]

約数ペア:

[(1, 390702920), (2, 195351460), (4, 97675730), (5, 78140584), (8, 48837865), (10, 39070292), (20, 19535146), (31, 12603320), (40, 9767573), (62, 6301660), (124, 3150830), (155, 2520664), (248, 1575415), (310, 1260332), (620, 630166), (1240, 315083)]