21490550

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{193}}^1$

素因数の和:353

約数の個数: 48

約数和(自身を含む): 42867792

約数和(自身を除く): 21377242

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 131, 170, 193, 262, 386, 425, 655, 850, 965, 1310, 1930, 2227, 3275, 3281, 4454, 4825, 6550, 6562, 9650, 11135, 16405, 22270, 25283, 32810, 50566, 55675, 82025, 111350, 126415, 164050, 252830, 429811, 632075, 859622, 1264150, 2149055, 4298110, 10745275, 21490550]

約数ペア:

[(1, 21490550), (2, 10745275), (5, 4298110), (10, 2149055), (17, 1264150), (25, 859622), (34, 632075), (50, 429811), (85, 252830), (131, 164050), (170, 126415), (193, 111350), (262, 82025), (386, 55675), (425, 50566), (655, 32810), (850, 25283), (965, 22270), (1310, 16405), (1930, 11135), (2227, 9650), (3275, 6562), (3281, 6550), (4454, 4825)]