20921288

素因数分解:

$2^3\times {\mathrm{17}}^2\times {\mathrm{9049}}^1$

素因数の和:9089

約数の個数: 24

約数和(自身を含む): 41675250

約数和(自身を除く): 20753962

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 289, 578, 1156, 2312, 9049, 18098, 36196, 72392, 153833, 307666, 615332, 1230664, 2615161, 5230322, 10460644, 20921288]

約数ペア:

[(1, 20921288), (2, 10460644), (4, 5230322), (8, 2615161), (17, 1230664), (34, 615332), (68, 307666), (136, 153833), (289, 72392), (578, 36196), (1156, 18098), (2312, 9049)]