19147990

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1\times {\mathrm{181}}^1$

素因数の和:408

約数の個数: 32

約数和(自身を含む): 35380800

約数和(自身を除く): 16232810

約数列:

[1, 2, 5, 10, 71, 142, 149, 181, 298, 355, 362, 710, 745, 905, 1490, 1810, 10579, 12851, 21158, 25702, 26969, 52895, 53938, 64255, 105790, 128510, 134845, 269690, 1914799, 3829598, 9573995, 19147990]

約数ペア:

[(1, 19147990), (2, 9573995), (5, 3829598), (10, 1914799), (71, 269690), (142, 134845), (149, 128510), (181, 105790), (298, 64255), (355, 53938), (362, 52895), (710, 26969), (745, 25702), (905, 21158), (1490, 12851), (1810, 10579)]