20503275

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1237}}^1$

素因数の和:1280

約数の個数: 48

約数和(自身を含む): 38685024

約数和(自身を除く): 18181749

約数列:

[1, 3, 5, 13, 15, 17, 25, 39, 51, 65, 75, 85, 195, 221, 255, 325, 425, 663, 975, 1105, 1237, 1275, 3315, 3711, 5525, 6185, 16081, 16575, 18555, 21029, 30925, 48243, 63087, 80405, 92775, 105145, 241215, 273377, 315435, 402025, 525725, 820131, 1206075, 1366885, 1577175, 4100655, 6834425, 20503275]

約数ペア:

[(1, 20503275), (3, 6834425), (5, 4100655), (13, 1577175), (15, 1366885), (17, 1206075), (25, 820131), (39, 525725), (51, 402025), (65, 315435), (75, 273377), (85, 241215), (195, 105145), (221, 92775), (255, 80405), (325, 63087), (425, 48243), (663, 30925), (975, 21029), (1105, 18555), (1237, 16575), (1275, 16081), (3315, 6185), (3711, 5525)]