20185165

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1$

素因数の和:182

約数の個数: 64

約数和(自身を含む): 33707520

約数和(自身を除く): 13522355

約数列:

[1, 5, 7, 11, 13, 35, 37, 55, 65, 77, 91, 109, 143, 185, 259, 385, 407, 455, 481, 545, 715, 763, 1001, 1199, 1295, 1417, 2035, 2405, 2849, 3367, 3815, 4033, 5005, 5291, 5995, 7085, 8393, 9919, 14245, 15587, 16835, 20165, 26455, 28231, 37037, 41965, 44363, 49595, 52429, 77935, 109109, 141155, 185185, 221815, 262145, 310541, 367003, 545545, 576719, 1552705, 1835015, 2883595, 4037033, 20185165]

約数ペア:

[(1, 20185165), (5, 4037033), (7, 2883595), (11, 1835015), (13, 1552705), (35, 576719), (37, 545545), (55, 367003), (65, 310541), (77, 262145), (91, 221815), (109, 185185), (143, 141155), (185, 109109), (259, 77935), (385, 52429), (407, 49595), (455, 44363), (481, 41965), (545, 37037), (715, 28231), (763, 26455), (1001, 20165), (1199, 16835), (1295, 15587), (1417, 14245), (2035, 9919), (2405, 8393), (2849, 7085), (3367, 5995), (3815, 5291), (4033, 5005)]