19775485

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 26357760

約数和(自身を除く): 6582275

約数列:

[1, 5, 19, 43, 47, 95, 103, 215, 235, 515, 817, 893, 1957, 2021, 4085, 4429, 4465, 4841, 9785, 10105, 22145, 24205, 38399, 84151, 91979, 191995, 208163, 420755, 459895, 1040815, 3955097, 19775485]

約数ペア:

[(1, 19775485), (5, 3955097), (19, 1040815), (43, 459895), (47, 420755), (95, 208163), (103, 191995), (215, 91979), (235, 84151), (515, 38399), (817, 24205), (893, 22145), (1957, 10105), (2021, 9785), (4085, 4841), (4429, 4465)]