19778668

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{811}}^1$

素因数の和:902

約数の個数: 48

約数和(自身を含む): 43289344

約数和(自身を除く): 23510676

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 67, 91, 134, 182, 268, 364, 469, 811, 871, 938, 1622, 1742, 1876, 3244, 3484, 5677, 6097, 10543, 11354, 12194, 21086, 22708, 24388, 42172, 54337, 73801, 108674, 147602, 217348, 295204, 380359, 706381, 760718, 1412762, 1521436, 2825524, 4944667, 9889334, 19778668]

約数ペア:

[(1, 19778668), (2, 9889334), (4, 4944667), (7, 2825524), (13, 1521436), (14, 1412762), (26, 760718), (28, 706381), (52, 380359), (67, 295204), (91, 217348), (134, 147602), (182, 108674), (268, 73801), (364, 54337), (469, 42172), (811, 24388), (871, 22708), (938, 21086), (1622, 12194), (1742, 11354), (1876, 10543), (3244, 6097), (3484, 5677)]