21523565

素因数分解:

$5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{283}}^1$

素因数の和:389

約数の個数: 32

約数和(自身を含む): 30917376

約数和(自身を除く): 9393811

約数列:

[1, 5, 7, 35, 41, 53, 205, 265, 283, 287, 371, 1415, 1435, 1855, 1981, 2173, 9905, 10865, 11603, 14999, 15211, 58015, 74995, 76055, 81221, 104993, 406105, 524965, 614959, 3074795, 4304713, 21523565]

約数ペア:

[(1, 21523565), (5, 4304713), (7, 3074795), (35, 614959), (41, 524965), (53, 406105), (205, 104993), (265, 81221), (283, 76055), (287, 74995), (371, 58015), (1415, 15211), (1435, 14999), (1855, 11603), (1981, 10865), (2173, 9905)]