21614380

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{613}}^1$

素因数の和:706

約数の個数: 48

約数和(自身を含む): 47656224

約数和(自身を除く): 26041844

約数列:

[1, 2, 4, 5, 10, 20, 41, 43, 82, 86, 164, 172, 205, 215, 410, 430, 613, 820, 860, 1226, 1763, 2452, 3065, 3526, 6130, 7052, 8815, 12260, 17630, 25133, 26359, 35260, 50266, 52718, 100532, 105436, 125665, 131795, 251330, 263590, 502660, 527180, 1080719, 2161438, 4322876, 5403595, 10807190, 21614380]

約数ペア:

[(1, 21614380), (2, 10807190), (4, 5403595), (5, 4322876), (10, 2161438), (20, 1080719), (41, 527180), (43, 502660), (82, 263590), (86, 251330), (164, 131795), (172, 125665), (205, 105436), (215, 100532), (410, 52718), (430, 50266), (613, 35260), (820, 26359), (860, 25133), (1226, 17630), (1763, 12260), (2452, 8815), (3065, 7052), (3526, 6130)]