18081245

素因数分解:

$5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{811}}^1$

素因数の和:850

約数の個数: 32

約数和(自身を含む): 27283200

約数和(自身を除く): 9201955

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 343, 455, 637, 811, 1715, 3185, 4055, 4459, 5677, 10543, 22295, 28385, 39739, 52715, 73801, 198695, 278173, 369005, 516607, 1390865, 2583035, 3616249, 18081245]

約数ペア:

[(1, 18081245), (5, 3616249), (7, 2583035), (13, 1390865), (35, 516607), (49, 369005), (65, 278173), (91, 198695), (245, 73801), (343, 52715), (455, 39739), (637, 28385), (811, 22295), (1715, 10543), (3185, 5677), (4055, 4459)]