28257720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{181}}^1\times {\mathrm{1301}}^1$

素因数の和:1496

約数の個数: 64

約数和(自身を含む): 85307040

約数和(自身を除く): 57049320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 181, 362, 543, 724, 905, 1086, 1301, 1448, 1810, 2172, 2602, 2715, 3620, 3903, 4344, 5204, 5430, 6505, 7240, 7806, 10408, 10860, 13010, 15612, 19515, 21720, 26020, 31224, 39030, 52040, 78060, 156120, 235481, 470962, 706443, 941924, 1177405, 1412886, 1883848, 2354810, 2825772, 3532215, 4709620, 5651544, 7064430, 9419240, 14128860, 28257720]

約数ペア:

[(1, 28257720), (2, 14128860), (3, 9419240), (4, 7064430), (5, 5651544), (6, 4709620), (8, 3532215), (10, 2825772), (12, 2354810), (15, 1883848), (20, 1412886), (24, 1177405), (30, 941924), (40, 706443), (60, 470962), (120, 235481), (181, 156120), (362, 78060), (543, 52040), (724, 39030), (905, 31224), (1086, 26020), (1301, 21720), (1448, 19515), (1810, 15612), (2172, 13010), (2602, 10860), (2715, 10408), (3620, 7806), (3903, 7240), (4344, 6505), (5204, 5430)]