20867445

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{151}}^1$

素因数の和:282

約数の個数: 48

約数和(自身を含む): 37844352

約数和(自身を除く): 16976907

約数列:

[1, 3, 5, 9, 15, 37, 45, 83, 111, 151, 185, 249, 333, 415, 453, 555, 747, 755, 1245, 1359, 1665, 2265, 3071, 3735, 5587, 6795, 9213, 12533, 15355, 16761, 27639, 27935, 37599, 46065, 50283, 62665, 83805, 112797, 138195, 187995, 251415, 463721, 563985, 1391163, 2318605, 4173489, 6955815, 20867445]

約数ペア:

[(1, 20867445), (3, 6955815), (5, 4173489), (9, 2318605), (15, 1391163), (37, 563985), (45, 463721), (83, 251415), (111, 187995), (151, 138195), (185, 112797), (249, 83805), (333, 62665), (415, 50283), (453, 46065), (555, 37599), (747, 27935), (755, 27639), (1245, 16761), (1359, 15355), (1665, 12533), (2265, 9213), (3071, 6795), (3735, 5587)]