20181200

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{3881}}^1$

素因数の和:3912

約数の個数: 60

約数和(自身を含む): 52228428

約数和(自身を除く): 32047228

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 3881, 5200, 7762, 15524, 19405, 31048, 38810, 50453, 62096, 77620, 97025, 100906, 155240, 194050, 201812, 252265, 310480, 388100, 403624, 504530, 776200, 807248, 1009060, 1261325, 1552400, 2018120, 2522650, 4036240, 5045300, 10090600, 20181200]

約数ペア:

[(1, 20181200), (2, 10090600), (4, 5045300), (5, 4036240), (8, 2522650), (10, 2018120), (13, 1552400), (16, 1261325), (20, 1009060), (25, 807248), (26, 776200), (40, 504530), (50, 403624), (52, 388100), (65, 310480), (80, 252265), (100, 201812), (104, 194050), (130, 155240), (200, 100906), (208, 97025), (260, 77620), (325, 62096), (400, 50453), (520, 38810), (650, 31048), (1040, 19405), (1300, 15524), (2600, 7762), (3881, 5200)]