18821400325

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{8273143}}^1$

素因数の和:8273173

約数の個数: 24

約数和(自身を含む): 28724355968

約数和(自身を除く): 9902955643

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 175, 325, 455, 2275, 8273143, 41365715, 57912001, 107550859, 206828575, 289560005, 537754295, 752856013, 1447800025, 2688771475, 3764280065, 18821400325]

約数ペア:

[(1, 18821400325), (5, 3764280065), (7, 2688771475), (13, 1447800025), (25, 752856013), (35, 537754295), (65, 289560005), (91, 206828575), (175, 107550859), (325, 57912001), (455, 41365715), (2275, 8273143)]