90909700

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{18553}}^1$

素因数の和:18581

約数の個数: 54

約数和(自身を含む): 229494426

約数和(自身を除く): 138584726

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 2450, 4900, 18553, 37106, 74212, 92765, 129871, 185530, 259742, 371060, 463825, 519484, 649355, 909097, 927650, 1298710, 1818194, 1855300, 2597420, 3246775, 3636388, 4545485, 6493550, 9090970, 12987100, 18181940, 22727425, 45454850, 90909700]

約数ペア:

[(1, 90909700), (2, 45454850), (4, 22727425), (5, 18181940), (7, 12987100), (10, 9090970), (14, 6493550), (20, 4545485), (25, 3636388), (28, 3246775), (35, 2597420), (49, 1855300), (50, 1818194), (70, 1298710), (98, 927650), (100, 909097), (140, 649355), (175, 519484), (196, 463825), (245, 371060), (350, 259742), (490, 185530), (700, 129871), (980, 92765), (1225, 74212), (2450, 37106), (4900, 18553)]