21286772

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{2711}}^1$

素因数の和:2879

約数の個数: 24

約数和(自身を含む): 40397952

約数和(自身を除く): 19111180

約数列:

[1, 2, 4, 13, 26, 52, 151, 302, 604, 1963, 2711, 3926, 5422, 7852, 10844, 35243, 70486, 140972, 409361, 818722, 1637444, 5321693, 10643386, 21286772]

約数ペア:

[(1, 21286772), (2, 10643386), (4, 5321693), (13, 1637444), (26, 818722), (52, 409361), (151, 140972), (302, 70486), (604, 35243), (1963, 10844), (2711, 7852), (3926, 5422)]