21015910

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{683}}^1$

素因数の和:888

約数の個数: 32

約数和(自身を含む): 40334112

約数和(自身を除く): 19318202

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 181, 362, 683, 905, 1366, 1810, 3077, 3415, 6154, 6830, 11611, 15385, 23222, 30770, 58055, 116110, 123623, 247246, 618115, 1236230, 2101591, 4203182, 10507955, 21015910]

約数ペア:

[(1, 21015910), (2, 10507955), (5, 4203182), (10, 2101591), (17, 1236230), (34, 618115), (85, 247246), (170, 123623), (181, 116110), (362, 58055), (683, 30770), (905, 23222), (1366, 15385), (1810, 11611), (3077, 6830), (3415, 6154)]