21164570

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{919}}^1$

素因数の和:987

約数の個数: 48

約数和(自身を含む): 45308160

約数和(自身を除く): 24143590

約数列:

[1, 2, 5, 7, 10, 14, 35, 47, 49, 70, 94, 98, 235, 245, 329, 470, 490, 658, 919, 1645, 1838, 2303, 3290, 4595, 4606, 6433, 9190, 11515, 12866, 23030, 32165, 43193, 45031, 64330, 86386, 90062, 215965, 225155, 302351, 431930, 450310, 604702, 1511755, 2116457, 3023510, 4232914, 10582285, 21164570]

約数ペア:

[(1, 21164570), (2, 10582285), (5, 4232914), (7, 3023510), (10, 2116457), (14, 1511755), (35, 604702), (47, 450310), (49, 431930), (70, 302351), (94, 225155), (98, 215965), (235, 90062), (245, 86386), (329, 64330), (470, 45031), (490, 43193), (658, 32165), (919, 23030), (1645, 12866), (1838, 11515), (2303, 9190), (3290, 6433), (4595, 4606)]