21972236

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{359}}^1$

素因数の和:494

約数の個数: 48

約数和(自身を含む): 45722880

約数和(自身を除く): 23750644

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 107, 143, 214, 286, 359, 428, 572, 718, 1177, 1391, 1436, 2354, 2782, 3949, 4667, 4708, 5564, 7898, 9334, 15301, 15796, 18668, 30602, 38413, 51337, 61204, 76826, 102674, 153652, 205348, 422543, 499369, 845086, 998738, 1690172, 1997476, 5493059, 10986118, 21972236]

約数ペア:

[(1, 21972236), (2, 10986118), (4, 5493059), (11, 1997476), (13, 1690172), (22, 998738), (26, 845086), (44, 499369), (52, 422543), (107, 205348), (143, 153652), (214, 102674), (286, 76826), (359, 61204), (428, 51337), (572, 38413), (718, 30602), (1177, 18668), (1391, 15796), (1436, 15301), (2354, 9334), (2782, 7898), (3949, 5564), (4667, 4708)]