21585740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{1663}}^1$

素因数の和:1742

約数の個数: 48

約数和(自身を含む): 50319360

約数和(自身を除く): 28733620

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 59, 110, 118, 220, 236, 295, 590, 649, 1180, 1298, 1663, 2596, 3245, 3326, 6490, 6652, 8315, 12980, 16630, 18293, 33260, 36586, 73172, 91465, 98117, 182930, 196234, 365860, 392468, 490585, 981170, 1079287, 1962340, 2158574, 4317148, 5396435, 10792870, 21585740]

約数ペア:

[(1, 21585740), (2, 10792870), (4, 5396435), (5, 4317148), (10, 2158574), (11, 1962340), (20, 1079287), (22, 981170), (44, 490585), (55, 392468), (59, 365860), (110, 196234), (118, 182930), (220, 98117), (236, 91465), (295, 73172), (590, 36586), (649, 33260), (1180, 18293), (1298, 16630), (1663, 12980), (2596, 8315), (3245, 6652), (3326, 6490)]