217465275

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^2\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:253

約数の個数: 72

約数和(自身を含む): 389816320

約数和(自身を除く): 172351045

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 79, 85, 127, 237, 255, 289, 381, 395, 425, 635, 867, 1185, 1275, 1343, 1445, 1905, 1975, 2159, 3175, 4029, 4335, 5925, 6477, 6715, 7225, 9525, 10033, 10795, 20145, 21675, 22831, 30099, 32385, 33575, 36703, 50165, 53975, 68493, 100725, 110109, 114155, 150495, 161925, 170561, 183515, 250825, 342465, 511683, 550545, 570775, 752475, 852805, 917575, 1712325, 2558415, 2752725, 2899537, 4264025, 8698611, 12792075, 14497685, 43493055, 72488425, 217465275]

約数ペア:

[(1, 217465275), (3, 72488425), (5, 43493055), (15, 14497685), (17, 12792075), (25, 8698611), (51, 4264025), (75, 2899537), (79, 2752725), (85, 2558415), (127, 1712325), (237, 917575), (255, 852805), (289, 752475), (381, 570775), (395, 550545), (425, 511683), (635, 342465), (867, 250825), (1185, 183515), (1275, 170561), (1343, 161925), (1445, 150495), (1905, 114155), (1975, 110109), (2159, 100725), (3175, 68493), (4029, 53975), (4335, 50165), (5925, 36703), (6477, 33575), (6715, 32385), (7225, 30099), (9525, 22831), (10033, 21675), (10795, 20145)]