18746495

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1$

素因数の和:311

約数の個数: 32

約数和(自身を含む): 25546752

約数和(自身を除く): 6800257

約数列:

[1, 5, 17, 23, 43, 85, 115, 215, 223, 391, 731, 989, 1115, 1955, 3655, 3791, 4945, 5129, 9589, 16813, 18955, 25645, 47945, 84065, 87193, 163013, 220547, 435965, 815065, 1102735, 3749299, 18746495]

約数ペア:

[(1, 18746495), (5, 3749299), (17, 1102735), (23, 815065), (43, 435965), (85, 220547), (115, 163013), (215, 87193), (223, 84065), (391, 47945), (731, 25645), (989, 18955), (1115, 16813), (1955, 9589), (3655, 5129), (3791, 4945)]