20010500

素因数分解:

$2^2\times 5^3\times {\mathrm{31}}^1\times {\mathrm{1291}}^1$

素因数の和:1341

約数の個数: 48

約数和(自身を含む): 45147648

約数和(自身を除く): 25137148

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 125, 155, 250, 310, 500, 620, 775, 1291, 1550, 2582, 3100, 3875, 5164, 6455, 7750, 12910, 15500, 25820, 32275, 40021, 64550, 80042, 129100, 160084, 161375, 200105, 322750, 400210, 645500, 800420, 1000525, 2001050, 4002100, 5002625, 10005250, 20010500]

約数ペア:

[(1, 20010500), (2, 10005250), (4, 5002625), (5, 4002100), (10, 2001050), (20, 1000525), (25, 800420), (31, 645500), (50, 400210), (62, 322750), (100, 200105), (124, 161375), (125, 160084), (155, 129100), (250, 80042), (310, 64550), (500, 40021), (620, 32275), (775, 25820), (1291, 15500), (1550, 12910), (2582, 7750), (3100, 6455), (3875, 5164)]