21866403

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:148

約数の個数: 48

約数和(自身を含む): 34784640

約数和(自身を除く): 12918237

約数列:

[1, 3, 13, 17, 39, 43, 51, 59, 129, 169, 177, 221, 507, 559, 663, 731, 767, 1003, 1677, 2193, 2301, 2537, 2873, 3009, 7267, 7611, 8619, 9503, 9971, 13039, 21801, 28509, 29913, 32981, 39117, 43129, 98943, 123539, 129387, 169507, 370617, 428753, 508521, 560677, 1286259, 1682031, 7288801, 21866403]

約数ペア:

[(1, 21866403), (3, 7288801), (13, 1682031), (17, 1286259), (39, 560677), (43, 508521), (51, 428753), (59, 370617), (129, 169507), (169, 129387), (177, 123539), (221, 98943), (507, 43129), (559, 39117), (663, 32981), (731, 29913), (767, 28509), (1003, 21801), (1677, 13039), (2193, 9971), (2301, 9503), (2537, 8619), (2873, 7611), (3009, 7267)]