840212385

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{10429}}^1$

素因数の和:10609

約数の個数: 32

約数和(自身を含む): 1387774080

約数和(自身を除く): 547561695

約数列:

[1, 3, 5, 15, 41, 123, 131, 205, 393, 615, 655, 1965, 5371, 10429, 16113, 26855, 31287, 52145, 80565, 156435, 427589, 1282767, 1366199, 2137945, 4098597, 6413835, 6830995, 20492985, 56014159, 168042477, 280070795, 840212385]

約数ペア:

[(1, 840212385), (3, 280070795), (5, 168042477), (15, 56014159), (41, 20492985), (123, 6830995), (131, 6413835), (205, 4098597), (393, 2137945), (615, 1366199), (655, 1282767), (1965, 427589), (5371, 156435), (10429, 80565), (16113, 52145), (26855, 31287)]