18977270

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{277}}^1$

素因数の和:345

約数の個数: 64

約数和(自身を含む): 40352256

約数和(自身を除く): 21374986

約数列:

[1, 2, 5, 10, 13, 17, 26, 31, 34, 62, 65, 85, 130, 155, 170, 221, 277, 310, 403, 442, 527, 554, 806, 1054, 1105, 1385, 2015, 2210, 2635, 2770, 3601, 4030, 4709, 5270, 6851, 7202, 8587, 9418, 13702, 17174, 18005, 23545, 34255, 36010, 42935, 47090, 61217, 68510, 85870, 111631, 122434, 145979, 223262, 291958, 306085, 558155, 612170, 729895, 1116310, 1459790, 1897727, 3795454, 9488635, 18977270]

約数ペア:

[(1, 18977270), (2, 9488635), (5, 3795454), (10, 1897727), (13, 1459790), (17, 1116310), (26, 729895), (31, 612170), (34, 558155), (62, 306085), (65, 291958), (85, 223262), (130, 145979), (155, 122434), (170, 111631), (221, 85870), (277, 68510), (310, 61217), (403, 47090), (442, 42935), (527, 36010), (554, 34255), (806, 23545), (1054, 18005), (1105, 17174), (1385, 13702), (2015, 9418), (2210, 8587), (2635, 7202), (2770, 6851), (3601, 5270), (4030, 4709)]