21402784

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{51449}}^1$

素因数の和:51472

約数の個数: 24

約数和(自身を含む): 45378900

約数和(自身を除く): 23976116

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 208, 416, 51449, 102898, 205796, 411592, 668837, 823184, 1337674, 1646368, 2675348, 5350696, 10701392, 21402784]

約数ペア:

[(1, 21402784), (2, 10701392), (4, 5350696), (8, 2675348), (13, 1646368), (16, 1337674), (26, 823184), (32, 668837), (52, 411592), (104, 205796), (208, 102898), (416, 51449)]