18001425

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{499}}^1$

素因数の和:562

約数の個数: 48

約数和(自身を含む): 32984000

約数和(自身を除く): 14982575

約数列:

[1, 3, 5, 13, 15, 25, 37, 39, 65, 75, 111, 185, 195, 325, 481, 499, 555, 925, 975, 1443, 1497, 2405, 2495, 2775, 6487, 7215, 7485, 12025, 12475, 18463, 19461, 32435, 36075, 37425, 55389, 92315, 97305, 162175, 240019, 276945, 461575, 486525, 720057, 1200095, 1384725, 3600285, 6000475, 18001425]

約数ペア:

[(1, 18001425), (3, 6000475), (5, 3600285), (13, 1384725), (15, 1200095), (25, 720057), (37, 486525), (39, 461575), (65, 276945), (75, 240019), (111, 162175), (185, 97305), (195, 92315), (325, 55389), (481, 37425), (499, 36075), (555, 32435), (925, 19461), (975, 18463), (1443, 12475), (1497, 12025), (2405, 7485), (2495, 7215), (2775, 6487)]