18981840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{569}}^1$

素因数の和:724

約数の個数: 80

約数和(自身を含む): 59371200

約数和(自身を除く): 40389360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 139, 240, 278, 417, 556, 569, 695, 834, 1112, 1138, 1390, 1668, 1707, 2085, 2224, 2276, 2780, 2845, 3336, 3414, 4170, 4552, 5560, 5690, 6672, 6828, 8340, 8535, 9104, 11120, 11380, 13656, 16680, 17070, 22760, 27312, 33360, 34140, 45520, 68280, 79091, 136560, 158182, 237273, 316364, 395455, 474546, 632728, 790910, 949092, 1186365, 1265456, 1581820, 1898184, 2372730, 3163640, 3796368, 4745460, 6327280, 9490920, 18981840]

約数ペア:

[(1, 18981840), (2, 9490920), (3, 6327280), (4, 4745460), (5, 3796368), (6, 3163640), (8, 2372730), (10, 1898184), (12, 1581820), (15, 1265456), (16, 1186365), (20, 949092), (24, 790910), (30, 632728), (40, 474546), (48, 395455), (60, 316364), (80, 237273), (120, 158182), (139, 136560), (240, 79091), (278, 68280), (417, 45520), (556, 34140), (569, 33360), (695, 27312), (834, 22760), (1112, 17070), (1138, 16680), (1390, 13656), (1668, 11380), (1707, 11120), (2085, 9104), (2224, 8535), (2276, 8340), (2780, 6828), (2845, 6672), (3336, 5690), (3414, 5560), (4170, 4552)]