20360800

素因数分解:

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

素因数の和:872

約数の個数: 72

約数和(自身を含む): 51371712

約数和(自身を除く): 31010912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 80, 100, 124, 155, 160, 200, 248, 310, 400, 496, 620, 775, 800, 821, 992, 1240, 1550, 1642, 2480, 3100, 3284, 4105, 4960, 6200, 6568, 8210, 12400, 13136, 16420, 20525, 24800, 25451, 26272, 32840, 41050, 50902, 65680, 82100, 101804, 127255, 131360, 164200, 203608, 254510, 328400, 407216, 509020, 636275, 656800, 814432, 1018040, 1272550, 2036080, 2545100, 4072160, 5090200, 10180400, 20360800]

約数ペア:

[(1, 20360800), (2, 10180400), (4, 5090200), (5, 4072160), (8, 2545100), (10, 2036080), (16, 1272550), (20, 1018040), (25, 814432), (31, 656800), (32, 636275), (40, 509020), (50, 407216), (62, 328400), (80, 254510), (100, 203608), (124, 164200), (155, 131360), (160, 127255), (200, 101804), (248, 82100), (310, 65680), (400, 50902), (496, 41050), (620, 32840), (775, 26272), (800, 25451), (821, 24800), (992, 20525), (1240, 16420), (1550, 13136), (1642, 12400), (2480, 8210), (3100, 6568), (3284, 6200), (4105, 4960)]