19849060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{12889}}^1$

素因数の和:12916

約数の個数: 48

約数和(自身を含む): 51972480

約数和(自身を除く): 32123420

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 12889, 25778, 51556, 64445, 90223, 128890, 141779, 180446, 257780, 283558, 360892, 451115, 567116, 708895, 902230, 992453, 1417790, 1804460, 1984906, 2835580, 3969812, 4962265, 9924530, 19849060]

約数ペア:

[(1, 19849060), (2, 9924530), (4, 4962265), (5, 3969812), (7, 2835580), (10, 1984906), (11, 1804460), (14, 1417790), (20, 992453), (22, 902230), (28, 708895), (35, 567116), (44, 451115), (55, 360892), (70, 283558), (77, 257780), (110, 180446), (140, 141779), (154, 128890), (220, 90223), (308, 64445), (385, 51556), (770, 25778), (1540, 12889)]