21855890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{16433}}^1$

素因数の和:16466

約数の個数: 32

約数和(自身を含む): 47329920

約数和(自身を除く): 25474030

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 95, 133, 190, 266, 665, 1330, 16433, 32866, 82165, 115031, 164330, 230062, 312227, 575155, 624454, 1150310, 1561135, 2185589, 3122270, 4371178, 10927945, 21855890]

約数ペア:

[(1, 21855890), (2, 10927945), (5, 4371178), (7, 3122270), (10, 2185589), (14, 1561135), (19, 1150310), (35, 624454), (38, 575155), (70, 312227), (95, 230062), (133, 164330), (190, 115031), (266, 82165), (665, 32866), (1330, 16433)]