19641380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{1223}}^1$

素因数の和:1316

約数の個数: 48

約数和(自身を含む): 45650304

約数和(自身を除く): 26008924

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 73, 110, 146, 220, 292, 365, 730, 803, 1223, 1460, 1606, 2446, 3212, 4015, 4892, 6115, 8030, 12230, 13453, 16060, 24460, 26906, 53812, 67265, 89279, 134530, 178558, 269060, 357116, 446395, 892790, 982069, 1785580, 1964138, 3928276, 4910345, 9820690, 19641380]

約数ペア:

[(1, 19641380), (2, 9820690), (4, 4910345), (5, 3928276), (10, 1964138), (11, 1785580), (20, 982069), (22, 892790), (44, 446395), (55, 357116), (73, 269060), (110, 178558), (146, 134530), (220, 89279), (292, 67265), (365, 53812), (730, 26906), (803, 24460), (1223, 16060), (1460, 13453), (1606, 12230), (2446, 8030), (3212, 6115), (4015, 4892)]