21380632

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{683}}^1$

素因数の和:752

約数の個数: 64

約数和(自身を含む): 50561280

約数和(自身を除く): 29180648

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 43, 52, 56, 86, 91, 104, 172, 182, 301, 344, 364, 559, 602, 683, 728, 1118, 1204, 1366, 2236, 2408, 2732, 3913, 4472, 4781, 5464, 7826, 8879, 9562, 15652, 17758, 19124, 29369, 31304, 35516, 38248, 58738, 62153, 71032, 117476, 124306, 205583, 234952, 248612, 381797, 411166, 497224, 763594, 822332, 1527188, 1644664, 2672579, 3054376, 5345158, 10690316, 21380632]

約数ペア:

[(1, 21380632), (2, 10690316), (4, 5345158), (7, 3054376), (8, 2672579), (13, 1644664), (14, 1527188), (26, 822332), (28, 763594), (43, 497224), (52, 411166), (56, 381797), (86, 248612), (91, 234952), (104, 205583), (172, 124306), (182, 117476), (301, 71032), (344, 62153), (364, 58738), (559, 38248), (602, 35516), (683, 31304), (728, 29369), (1118, 19124), (1204, 17758), (1366, 15652), (2236, 9562), (2408, 8879), (2732, 7826), (3913, 5464), (4472, 4781)]