21945700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{107}}^1\times {\mathrm{293}}^1$

素因数の和:421

約数の個数: 72

約数和(自身を含む): 55121472

約数和(自身を除く): 33175772

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 107, 140, 175, 214, 293, 350, 428, 535, 586, 700, 749, 1070, 1172, 1465, 1498, 2051, 2140, 2675, 2930, 2996, 3745, 4102, 5350, 5860, 7325, 7490, 8204, 10255, 10700, 14650, 14980, 18725, 20510, 29300, 31351, 37450, 41020, 51275, 62702, 74900, 102550, 125404, 156755, 205100, 219457, 313510, 438914, 627020, 783775, 877828, 1097285, 1567550, 2194570, 3135100, 4389140, 5486425, 10972850, 21945700]

約数ペア:

[(1, 21945700), (2, 10972850), (4, 5486425), (5, 4389140), (7, 3135100), (10, 2194570), (14, 1567550), (20, 1097285), (25, 877828), (28, 783775), (35, 627020), (50, 438914), (70, 313510), (100, 219457), (107, 205100), (140, 156755), (175, 125404), (214, 102550), (293, 74900), (350, 62702), (428, 51275), (535, 41020), (586, 37450), (700, 31351), (749, 29300), (1070, 20510), (1172, 18725), (1465, 14980), (1498, 14650), (2051, 10700), (2140, 10255), (2675, 8204), (2930, 7490), (2996, 7325), (3745, 5860), (4102, 5350)]