21550740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8353}}^1$

素因数の和:8408

約数の個数: 48

約数和(自身を含む): 61752768

約数和(自身を除く): 40202028

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 516, 645, 860, 1290, 2580, 8353, 16706, 25059, 33412, 41765, 50118, 83530, 100236, 125295, 167060, 250590, 359179, 501180, 718358, 1077537, 1436716, 1795895, 2155074, 3591790, 4310148, 5387685, 7183580, 10775370, 21550740]

約数ペア:

[(1, 21550740), (2, 10775370), (3, 7183580), (4, 5387685), (5, 4310148), (6, 3591790), (10, 2155074), (12, 1795895), (15, 1436716), (20, 1077537), (30, 718358), (43, 501180), (60, 359179), (86, 250590), (129, 167060), (172, 125295), (215, 100236), (258, 83530), (430, 50118), (516, 41765), (645, 33412), (860, 25059), (1290, 16706), (2580, 8353)]