18821229

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1097}}^1$

素因数の和:1169

約数の個数: 32

約数和(自身を含む): 30919680

約数和(自身を除く): 12098451

約数列:

[1, 3, 7, 19, 21, 43, 57, 129, 133, 301, 399, 817, 903, 1097, 2451, 3291, 5719, 7679, 17157, 20843, 23037, 47171, 62529, 141513, 145901, 330197, 437703, 896249, 990591, 2688747, 6273743, 18821229]

約数ペア:

[(1, 18821229), (3, 6273743), (7, 2688747), (19, 990591), (21, 896249), (43, 437703), (57, 330197), (129, 145901), (133, 141513), (301, 62529), (399, 47171), (817, 23037), (903, 20843), (1097, 17157), (2451, 7679), (3291, 5719)]