19252820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{367}}^1$

素因数の和:480

約数の個数: 48

約数和(自身を含む): 42163968

約数和(自身を除く): 22911148

約数列:

[1, 2, 4, 5, 10, 20, 43, 61, 86, 122, 172, 215, 244, 305, 367, 430, 610, 734, 860, 1220, 1468, 1835, 2623, 3670, 5246, 7340, 10492, 13115, 15781, 22387, 26230, 31562, 44774, 52460, 63124, 78905, 89548, 111935, 157810, 223870, 315620, 447740, 962641, 1925282, 3850564, 4813205, 9626410, 19252820]

約数ペア:

[(1, 19252820), (2, 9626410), (4, 4813205), (5, 3850564), (10, 1925282), (20, 962641), (43, 447740), (61, 315620), (86, 223870), (122, 157810), (172, 111935), (215, 89548), (244, 78905), (305, 63124), (367, 52460), (430, 44774), (610, 31562), (734, 26230), (860, 22387), (1220, 15781), (1468, 13115), (1835, 10492), (2623, 7340), (3670, 5246)]