90041980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{20747}}^1$

素因数の和:20794

約数の個数: 48

約数和(自身を含む): 223082496

約数和(自身を除く): 133040516

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 20747, 41494, 82988, 103735, 145229, 207470, 290458, 414940, 580916, 643157, 726145, 1286314, 1452290, 2572628, 2904580, 3215785, 4502099, 6431570, 9004198, 12863140, 18008396, 22510495, 45020990, 90041980]

約数ペア:

[(1, 90041980), (2, 45020990), (4, 22510495), (5, 18008396), (7, 12863140), (10, 9004198), (14, 6431570), (20, 4502099), (28, 3215785), (31, 2904580), (35, 2572628), (62, 1452290), (70, 1286314), (124, 726145), (140, 643157), (155, 580916), (217, 414940), (310, 290458), (434, 207470), (620, 145229), (868, 103735), (1085, 82988), (2170, 41494), (4340, 20747)]