81963.00000000

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{346831}}^1$

素因数の和:346849

約数の個数: 32

約数和(自身を含む): 249719040

約数和(自身を除く): 152606360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 346831, 693662, 1387324, 1734155, 2427817, 2774648, 3468310, 4855634, 6936620, 9711268, 12139085, 13873240, 19422536, 24278170, 48556340, 97112680]

約数ペア:

[(1, 97112680), (2, 48556340), (4, 24278170), (5, 19422536), (7, 13873240), (8, 12139085), (10, 9711268), (14, 6936620), (20, 4855634), (28, 3468310), (35, 2774648), (40, 2427817), (56, 1734155), (70, 1387324), (140, 693662), (280, 346831)]