18938490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{277}}^1$

素因数の和:383

約数の個数: 64

約数和(自身を含む): 47558016

約数和(自身を除く): 28619526

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 53, 86, 106, 129, 159, 215, 258, 265, 277, 318, 430, 530, 554, 645, 795, 831, 1290, 1385, 1590, 1662, 2279, 2770, 4155, 4558, 6837, 8310, 11395, 11911, 13674, 14681, 22790, 23822, 29362, 34185, 35733, 44043, 59555, 68370, 71466, 73405, 88086, 119110, 146810, 178665, 220215, 357330, 440430, 631283, 1262566, 1893849, 3156415, 3787698, 6312830, 9469245, 18938490]

約数ペア:

[(1, 18938490), (2, 9469245), (3, 6312830), (5, 3787698), (6, 3156415), (10, 1893849), (15, 1262566), (30, 631283), (43, 440430), (53, 357330), (86, 220215), (106, 178665), (129, 146810), (159, 119110), (215, 88086), (258, 73405), (265, 71466), (277, 68370), (318, 59555), (430, 44043), (530, 35733), (554, 34185), (645, 29362), (795, 23822), (831, 22790), (1290, 14681), (1385, 13674), (1590, 11911), (1662, 11395), (2279, 8310), (2770, 6837), (4155, 4558)]