18739185

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1709}}^1$

素因数の和:1777

約数の個数: 32

約数和(自身を含む): 32503680

約数和(自身を除く): 13764495

約数列:

[1, 3, 5, 15, 17, 43, 51, 85, 129, 215, 255, 645, 731, 1709, 2193, 3655, 5127, 8545, 10965, 25635, 29053, 73487, 87159, 145265, 220461, 367435, 435795, 1102305, 1249279, 3747837, 6246395, 18739185]

約数ペア:

[(1, 18739185), (3, 6246395), (5, 3747837), (15, 1249279), (17, 1102305), (43, 435795), (51, 367435), (85, 220461), (129, 145265), (215, 87159), (255, 73487), (645, 29053), (731, 25635), (1709, 10965), (2193, 8545), (3655, 5127)]