20320564

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{113}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 40372416

約数和(自身を除く): 20051852

約数列:

[1, 2, 4, 11, 22, 44, 61, 67, 113, 122, 134, 226, 244, 268, 452, 671, 737, 1243, 1342, 1474, 2486, 2684, 2948, 4087, 4972, 6893, 7571, 8174, 13786, 15142, 16348, 27572, 30284, 44957, 75823, 83281, 89914, 151646, 166562, 179828, 303292, 333124, 461831, 923662, 1847324, 5080141, 10160282, 20320564]

約数ペア:

[(1, 20320564), (2, 10160282), (4, 5080141), (11, 1847324), (22, 923662), (44, 461831), (61, 333124), (67, 303292), (113, 179828), (122, 166562), (134, 151646), (226, 89914), (244, 83281), (268, 75823), (452, 44957), (671, 30284), (737, 27572), (1243, 16348), (1342, 15142), (1474, 13786), (2486, 8174), (2684, 7571), (2948, 6893), (4087, 4972)]