21184540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{1381}}^1$

素因数の和:1462

約数の個数: 48

約数和(自身を含む): 48756960

約数和(自身を除く): 27572420

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 59, 65, 118, 130, 236, 260, 295, 590, 767, 1180, 1381, 1534, 2762, 3068, 3835, 5524, 6905, 7670, 13810, 15340, 17953, 27620, 35906, 71812, 81479, 89765, 162958, 179530, 325916, 359060, 407395, 814790, 1059227, 1629580, 2118454, 4236908, 5296135, 10592270, 21184540]

約数ペア:

[(1, 21184540), (2, 10592270), (4, 5296135), (5, 4236908), (10, 2118454), (13, 1629580), (20, 1059227), (26, 814790), (52, 407395), (59, 359060), (65, 325916), (118, 179530), (130, 162958), (236, 89765), (260, 81479), (295, 71812), (590, 35906), (767, 27620), (1180, 17953), (1381, 15340), (1534, 13810), (2762, 7670), (3068, 6905), (3835, 5524)]