1286980

素因数分解:

$2^2\times 5^1\times {\mathrm{229}}^1\times {\mathrm{281}}^1$

素因数の和:519

約数の個数: 24

約数和(自身を含む): 2724120

約数和(自身を除く): 1437140

約数列:

[1, 2, 4, 5, 10, 20, 229, 281, 458, 562, 916, 1124, 1145, 1405, 2290, 2810, 4580, 5620, 64349, 128698, 257396, 321745, 643490, 1286980]

約数ペア:

[(1, 1286980), (2, 643490), (4, 321745), (5, 257396), (10, 128698), (20, 64349), (229, 5620), (281, 4580), (458, 2810), (562, 2290), (916, 1405), (1124, 1145)]