81560780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{7019}}^1$

素因数の和:7118

約数の個数: 48

約数和(自身を含む): 198132480

約数和(自身を除く): 116571700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 83, 140, 166, 332, 415, 581, 830, 1162, 1660, 2324, 2905, 5810, 7019, 11620, 14038, 28076, 35095, 49133, 70190, 98266, 140380, 196532, 245665, 491330, 582577, 982660, 1165154, 2330308, 2912885, 4078039, 5825770, 8156078, 11651540, 16312156, 20390195, 40780390, 81560780]

約数ペア:

[(1, 81560780), (2, 40780390), (4, 20390195), (5, 16312156), (7, 11651540), (10, 8156078), (14, 5825770), (20, 4078039), (28, 2912885), (35, 2330308), (70, 1165154), (83, 982660), (140, 582577), (166, 491330), (332, 245665), (415, 196532), (581, 140380), (830, 98266), (1162, 70190), (1660, 49133), (2324, 35095), (2905, 28076), (5810, 14038), (7019, 11620)]