2181396020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1\times {\mathrm{10613}}^1$

素因数の和:10904

約数の個数: 48

約数和(自身を含む): 4707521280

約数和(自身を除く): 2526125260

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 239, 430, 478, 860, 956, 1195, 2390, 4780, 10277, 10613, 20554, 21226, 41108, 42452, 51385, 53065, 102770, 106130, 205540, 212260, 456359, 912718, 1825436, 2281795, 2536507, 4563590, 5073014, 9127180, 10146028, 12682535, 25365070, 50730140, 109069801, 218139602, 436279204, 545349005, 1090698010, 2181396020]

約数ペア:

[(1, 2181396020), (2, 1090698010), (4, 545349005), (5, 436279204), (10, 218139602), (20, 109069801), (43, 50730140), (86, 25365070), (172, 12682535), (215, 10146028), (239, 9127180), (430, 5073014), (478, 4563590), (860, 2536507), (956, 2281795), (1195, 1825436), (2390, 912718), (4780, 456359), (10277, 212260), (10613, 205540), (20554, 106130), (21226, 102770), (41108, 53065), (42452, 51385)]