21263340

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50627}}^1$

素因数の和:50646

約数の個数: 48

約数和(自身を含む): 68044032

約数和(自身を除く): 46780692

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 50627, 101254, 151881, 202508, 253135, 303762, 354389, 506270, 607524, 708778, 759405, 1012540, 1063167, 1417556, 1518810, 1771945, 2126334, 3037620, 3543890, 4252668, 5315835, 7087780, 10631670, 21263340]

約数ペア:

[(1, 21263340), (2, 10631670), (3, 7087780), (4, 5315835), (5, 4252668), (6, 3543890), (7, 3037620), (10, 2126334), (12, 1771945), (14, 1518810), (15, 1417556), (20, 1063167), (21, 1012540), (28, 759405), (30, 708778), (35, 607524), (42, 506270), (60, 354389), (70, 303762), (84, 253135), (105, 202508), (140, 151881), (210, 101254), (420, 50627)]