641567140

素因数分解:

$2^2\times 5^1\times {\mathrm{4451}}^1\times {\mathrm{7207}}^1$

素因数の和:11667

約数の個数: 24

約数和(自身を含む): 1347780672

約数和(自身を除く): 706213532

約数列:

[1, 2, 4, 5, 10, 20, 4451, 7207, 8902, 14414, 17804, 22255, 28828, 36035, 44510, 72070, 89020, 144140, 32078357, 64156714, 128313428, 160391785, 320783570, 641567140]

約数ペア:

[(1, 641567140), (2, 320783570), (4, 160391785), (5, 128313428), (10, 64156714), (20, 32078357), (4451, 144140), (7207, 89020), (8902, 72070), (14414, 44510), (17804, 36035), (22255, 28828)]