428441860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{278209}}^1$

素因数の和:278236

約数の個数: 48

約数和(自身を含む): 1121742720

約数和(自身を除く): 693300860

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, 278209, 556418, 1112836, 1391045, 1947463, 2782090, 3060299, 3894926, 5564180, 6120598, 7789852, 9737315, 12241196, 15301495, 19474630, 21422093, 30602990, 38949260, 42844186, 61205980, 85688372, 107110465, 214220930, 428441860]

約数ペア:

[(1, 428441860), (2, 214220930), (4, 107110465), (5, 85688372), (7, 61205980), (10, 42844186), (11, 38949260), (14, 30602990), (20, 21422093), (22, 19474630), (28, 15301495), (35, 12241196), (44, 9737315), (55, 7789852), (70, 6120598), (77, 5564180), (110, 3894926), (140, 3060299), (154, 2782090), (220, 1947463), (308, 1391045), (385, 1112836), (770, 556418), (1540, 278209)]