12725500

素因数分解:

$2^2\times 5^3\times {\mathrm{31}}^1\times {\mathrm{821}}^1$

素因数の和:871

約数の個数: 48

約数和(自身を含む): 28723968

約数和(自身を除く): 15998468

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 125, 155, 250, 310, 500, 620, 775, 821, 1550, 1642, 3100, 3284, 3875, 4105, 7750, 8210, 15500, 16420, 20525, 25451, 41050, 50902, 82100, 101804, 102625, 127255, 205250, 254510, 410500, 509020, 636275, 1272550, 2545100, 3181375, 6362750, 12725500]

約数ペア:

[(1, 12725500), (2, 6362750), (4, 3181375), (5, 2545100), (10, 1272550), (20, 636275), (25, 509020), (31, 410500), (50, 254510), (62, 205250), (100, 127255), (124, 102625), (125, 101804), (155, 82100), (250, 50902), (310, 41050), (500, 25451), (620, 20525), (775, 16420), (821, 15500), (1550, 8210), (1642, 7750), (3100, 4105), (3284, 3875)]