81811210

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{48409}}^1$

素因数の和:48442

約数の個数: 24

約数和(自身を含む): 159462540

約数和(自身を除く): 77651330

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 48409, 96818, 242045, 484090, 629317, 1258634, 3146585, 6293170, 8181121, 16362242, 40905605, 81811210]

約数ペア:

[(1, 81811210), (2, 40905605), (5, 16362242), (10, 8181121), (13, 6293170), (26, 3146585), (65, 1258634), (130, 629317), (169, 484090), (338, 242045), (845, 96818), (1690, 48409)]