21063340

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1511}}^1$

素因数の和:1578

約数の個数: 48

約数和(自身を含む): 48009024

約数和(自身を除く): 26945684

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 41, 68, 82, 85, 164, 170, 205, 340, 410, 697, 820, 1394, 1511, 2788, 3022, 3485, 6044, 6970, 7555, 13940, 15110, 25687, 30220, 51374, 61951, 102748, 123902, 128435, 247804, 256870, 309755, 513740, 619510, 1053167, 1239020, 2106334, 4212668, 5265835, 10531670, 21063340]

約数ペア:

[(1, 21063340), (2, 10531670), (4, 5265835), (5, 4212668), (10, 2106334), (17, 1239020), (20, 1053167), (34, 619510), (41, 513740), (68, 309755), (82, 256870), (85, 247804), (164, 128435), (170, 123902), (205, 102748), (340, 61951), (410, 51374), (697, 30220), (820, 25687), (1394, 15110), (1511, 13940), (2788, 7555), (3022, 6970), (3485, 6044)]