978972020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{12107}}^1$

素因数の和:12440

約数の個数: 48

約数和(自身を含む): 2221285248

約数和(自身を除く): 1242313228

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 311, 622, 1244, 1555, 3110, 4043, 6220, 8086, 12107, 16172, 20215, 24214, 40430, 48428, 60535, 80860, 121070, 157391, 242140, 314782, 629564, 786955, 1573910, 3147820, 3765277, 7530554, 15061108, 18826385, 37652770, 48948601, 75305540, 97897202, 195794404, 244743005, 489486010, 978972020]

約数ペア:

[(1, 978972020), (2, 489486010), (4, 244743005), (5, 195794404), (10, 97897202), (13, 75305540), (20, 48948601), (26, 37652770), (52, 18826385), (65, 15061108), (130, 7530554), (260, 3765277), (311, 3147820), (622, 1573910), (1244, 786955), (1555, 629564), (3110, 314782), (4043, 242140), (6220, 157391), (8086, 121070), (12107, 80860), (16172, 60535), (20215, 48428), (24214, 40430)]