28003780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{317}}^1\times {\mathrm{631}}^1$

素因数の和:964

約数の個数: 48

約数和(自身を含む): 67527936

約数和(自身を除く): 39524156

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 317, 631, 634, 1262, 1268, 1585, 2219, 2524, 3155, 3170, 4417, 4438, 6310, 6340, 8834, 8876, 11095, 12620, 17668, 22085, 22190, 44170, 44380, 88340, 200027, 400054, 800108, 1000135, 1400189, 2000270, 2800378, 4000540, 5600756, 7000945, 14001890, 28003780]

約数ペア:

[(1, 28003780), (2, 14001890), (4, 7000945), (5, 5600756), (7, 4000540), (10, 2800378), (14, 2000270), (20, 1400189), (28, 1000135), (35, 800108), (70, 400054), (140, 200027), (317, 88340), (631, 44380), (634, 44170), (1262, 22190), (1268, 22085), (1585, 17668), (2219, 12620), (2524, 11095), (3155, 8876), (3170, 8834), (4417, 6340), (4438, 6310)]