81589480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{1381}}^1$

素因数の和:1610

約数の個数: 64

約数和(自身を含む): 210948480

約数和(自身を除く): 129359000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 211, 280, 422, 844, 1055, 1381, 1477, 1688, 2110, 2762, 2954, 4220, 5524, 5908, 6905, 7385, 8440, 9667, 11048, 11816, 13810, 14770, 19334, 27620, 29540, 38668, 48335, 55240, 59080, 77336, 96670, 193340, 291391, 386680, 582782, 1165564, 1456955, 2039737, 2331128, 2913910, 4079474, 5827820, 8158948, 10198685, 11655640, 16317896, 20397370, 40794740, 81589480]

約数ペア:

[(1, 81589480), (2, 40794740), (4, 20397370), (5, 16317896), (7, 11655640), (8, 10198685), (10, 8158948), (14, 5827820), (20, 4079474), (28, 2913910), (35, 2331128), (40, 2039737), (56, 1456955), (70, 1165564), (140, 582782), (211, 386680), (280, 291391), (422, 193340), (844, 96670), (1055, 77336), (1381, 59080), (1477, 55240), (1688, 48335), (2110, 38668), (2762, 29540), (2954, 27620), (4220, 19334), (5524, 14770), (5908, 13810), (6905, 11816), (7385, 11048), (8440, 9667)]