816900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{389}}^1$

素因数の和:413

約数の個数: 72

約数和(自身を含む): 2708160

約数和(自身を除く): 1891260

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 389, 420, 525, 700, 778, 1050, 1167, 1556, 1945, 2100, 2334, 2723, 3890, 4668, 5446, 5835, 7780, 8169, 9725, 10892, 11670, 13615, 16338, 19450, 23340, 27230, 29175, 32676, 38900, 40845, 54460, 58350, 68075, 81690, 116700, 136150, 163380, 204225, 272300, 408450, 816900]

約数ペア:

[(1, 816900), (2, 408450), (3, 272300), (4, 204225), (5, 163380), (6, 136150), (7, 116700), (10, 81690), (12, 68075), (14, 58350), (15, 54460), (20, 40845), (21, 38900), (25, 32676), (28, 29175), (30, 27230), (35, 23340), (42, 19450), (50, 16338), (60, 13615), (70, 11670), (75, 10892), (84, 9725), (100, 8169), (105, 7780), (140, 5835), (150, 5446), (175, 4668), (210, 3890), (300, 2723), (350, 2334), (389, 2100), (420, 1945), (525, 1556), (700, 1167), (778, 1050)]