21985845

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{113}}^1$

素因数の和:254

約数の個数: 64

約数和(自身を含む): 43338240

約数和(自身を除く): 21352395

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 105, 109, 113, 119, 255, 327, 339, 357, 545, 565, 595, 763, 791, 1635, 1695, 1785, 1853, 1921, 2289, 2373, 3815, 3955, 5559, 5763, 9265, 9605, 11445, 11865, 12317, 12971, 13447, 27795, 28815, 36951, 38913, 40341, 61585, 64855, 67235, 86219, 184755, 194565, 201705, 209389, 258657, 431095, 628167, 1046945, 1293285, 1465723, 3140835, 4397169, 7328615, 21985845]

約数ペア:

[(1, 21985845), (3, 7328615), (5, 4397169), (7, 3140835), (15, 1465723), (17, 1293285), (21, 1046945), (35, 628167), (51, 431095), (85, 258657), (105, 209389), (109, 201705), (113, 194565), (119, 184755), (255, 86219), (327, 67235), (339, 64855), (357, 61585), (545, 40341), (565, 38913), (595, 36951), (763, 28815), (791, 27795), (1635, 13447), (1695, 12971), (1785, 12317), (1853, 11865), (1921, 11445), (2289, 9605), (2373, 9265), (3815, 5763), (3955, 5559)]