40021000

素因数分解:

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

素因数の和:1343

約数の個数: 64

約数和(自身を含む): 96744960

約数和(自身を除く): 56723960

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 125, 155, 200, 248, 250, 310, 500, 620, 775, 1000, 1240, 1291, 1550, 2582, 3100, 3875, 5164, 6200, 6455, 7750, 10328, 12910, 15500, 25820, 31000, 32275, 40021, 51640, 64550, 80042, 129100, 160084, 161375, 200105, 258200, 320168, 322750, 400210, 645500, 800420, 1000525, 1291000, 1600840, 2001050, 4002100, 5002625, 8004200, 10005250, 20010500, 40021000]

約数ペア:

[(1, 40021000), (2, 20010500), (4, 10005250), (5, 8004200), (8, 5002625), (10, 4002100), (20, 2001050), (25, 1600840), (31, 1291000), (40, 1000525), (50, 800420), (62, 645500), (100, 400210), (124, 322750), (125, 320168), (155, 258200), (200, 200105), (248, 161375), (250, 160084), (310, 129100), (500, 80042), (620, 64550), (775, 51640), (1000, 40021), (1240, 32275), (1291, 31000), (1550, 25820), (2582, 15500), (3100, 12910), (3875, 10328), (5164, 7750), (6200, 6455)]