90370420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{645503}}^1$

素因数の和:645519

約数の個数: 24

約数和(自身を含む): 216889344

約数和(自身を除く): 126518924

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 645503, 1291006, 2582012, 3227515, 4518521, 6455030, 9037042, 12910060, 18074084, 22592605, 45185210, 90370420]

約数ペア:

[(1, 90370420), (2, 45185210), (4, 22592605), (5, 18074084), (7, 12910060), (10, 9037042), (14, 6455030), (20, 4518521), (28, 3227515), (35, 2582012), (70, 1291006), (140, 645503)]