17891960

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{307}}^1$

素因数の和:396

約数の個数: 64

約数和(自身を含む): 42577920

約数和(自身を除く): 24685960

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 47, 62, 94, 124, 155, 188, 235, 248, 307, 310, 376, 470, 614, 620, 940, 1228, 1240, 1457, 1535, 1880, 2456, 2914, 3070, 5828, 6140, 7285, 9517, 11656, 12280, 14429, 14570, 19034, 28858, 29140, 38068, 47585, 57716, 58280, 72145, 76136, 95170, 115432, 144290, 190340, 288580, 380680, 447299, 577160, 894598, 1789196, 2236495, 3578392, 4472990, 8945980, 17891960]

約数ペア:

[(1, 17891960), (2, 8945980), (4, 4472990), (5, 3578392), (8, 2236495), (10, 1789196), (20, 894598), (31, 577160), (40, 447299), (47, 380680), (62, 288580), (94, 190340), (124, 144290), (155, 115432), (188, 95170), (235, 76136), (248, 72145), (307, 58280), (310, 57716), (376, 47585), (470, 38068), (614, 29140), (620, 28858), (940, 19034), (1228, 14570), (1240, 14429), (1457, 12280), (1535, 11656), (1880, 9517), (2456, 7285), (2914, 6140), (3070, 5828)]