19660340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{317}}^1\times {\mathrm{443}}^1$

素因数の和:776

約数の個数: 48

約数和(自身を含む): 47440512

約数和(自身を除く): 27780172

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 317, 443, 634, 886, 1268, 1585, 1772, 2215, 2219, 3101, 3170, 4430, 4438, 6202, 6340, 8860, 8876, 11095, 12404, 15505, 22190, 31010, 44380, 62020, 140431, 280862, 561724, 702155, 983017, 1404310, 1966034, 2808620, 3932068, 4915085, 9830170, 19660340]

約数ペア:

[(1, 19660340), (2, 9830170), (4, 4915085), (5, 3932068), (7, 2808620), (10, 1966034), (14, 1404310), (20, 983017), (28, 702155), (35, 561724), (70, 280862), (140, 140431), (317, 62020), (443, 44380), (634, 31010), (886, 22190), (1268, 15505), (1585, 12404), (1772, 11095), (2215, 8876), (2219, 8860), (3101, 6340), (3170, 6202), (4430, 4438)]