20421830

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{14281}}^1$

素因数の和:14312

約数の個数: 32

約数和(自身を含む): 43188768

約数和(自身を除く): 22766938

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 130, 143, 286, 715, 1430, 14281, 28562, 71405, 142810, 157091, 185653, 314182, 371306, 785455, 928265, 1570910, 1856530, 2042183, 4084366, 10210915, 20421830]

約数ペア:

[(1, 20421830), (2, 10210915), (5, 4084366), (10, 2042183), (11, 1856530), (13, 1570910), (22, 928265), (26, 785455), (55, 371306), (65, 314182), (110, 185653), (130, 157091), (143, 142810), (286, 71405), (715, 28562), (1430, 14281)]