21025710

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1811}}^1$

素因数の和:1870

約数の個数: 64

約数和(自身を含む): 57404160

約数和(自身を除く): 36378450

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 43, 45, 54, 86, 90, 129, 135, 215, 258, 270, 387, 430, 645, 774, 1161, 1290, 1811, 1935, 2322, 3622, 3870, 5433, 5805, 9055, 10866, 11610, 16299, 18110, 27165, 32598, 48897, 54330, 77873, 81495, 97794, 155746, 162990, 233619, 244485, 389365, 467238, 488970, 700857, 778730, 1168095, 1401714, 2102571, 2336190, 3504285, 4205142, 7008570, 10512855, 21025710]

約数ペア:

[(1, 21025710), (2, 10512855), (3, 7008570), (5, 4205142), (6, 3504285), (9, 2336190), (10, 2102571), (15, 1401714), (18, 1168095), (27, 778730), (30, 700857), (43, 488970), (45, 467238), (54, 389365), (86, 244485), (90, 233619), (129, 162990), (135, 155746), (215, 97794), (258, 81495), (270, 77873), (387, 54330), (430, 48897), (645, 32598), (774, 27165), (1161, 18110), (1290, 16299), (1811, 11610), (1935, 10866), (2322, 9055), (3622, 5805), (3870, 5433)]