219099440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{391249}}^1$

素因数の和:391269

約数の個数: 40

約数和(自身を含む): 582180000

約数和(自身を除く): 363080560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 391249, 782498, 1564996, 1956245, 2738743, 3129992, 3912490, 5477486, 6259984, 7824980, 10954972, 13693715, 15649960, 21909944, 27387430, 31299920, 43819888, 54774860, 109549720, 219099440]

約数ペア:

[(1, 219099440), (2, 109549720), (4, 54774860), (5, 43819888), (7, 31299920), (8, 27387430), (10, 21909944), (14, 15649960), (16, 13693715), (20, 10954972), (28, 7824980), (35, 6259984), (40, 5477486), (56, 3912490), (70, 3129992), (80, 2738743), (112, 1956245), (140, 1564996), (280, 782498), (560, 391249)]