28757625

素因数分解:

$3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{347}}^1$

素因数の和:395

約数の個数: 64

約数和(自身を含む): 54722304

約数和(自身を除く): 25964679

約数列:

[1, 3, 5, 13, 15, 17, 25, 39, 51, 65, 75, 85, 125, 195, 221, 255, 325, 347, 375, 425, 663, 975, 1041, 1105, 1275, 1625, 1735, 2125, 3315, 4511, 4875, 5205, 5525, 5899, 6375, 8675, 13533, 16575, 17697, 22555, 26025, 27625, 29495, 43375, 67665, 76687, 82875, 88485, 112775, 130125, 147475, 230061, 338325, 383435, 442425, 563875, 737375, 1150305, 1691625, 1917175, 2212125, 5751525, 9585875, 28757625]

約数ペア:

[(1, 28757625), (3, 9585875), (5, 5751525), (13, 2212125), (15, 1917175), (17, 1691625), (25, 1150305), (39, 737375), (51, 563875), (65, 442425), (75, 383435), (85, 338325), (125, 230061), (195, 147475), (221, 130125), (255, 112775), (325, 88485), (347, 82875), (375, 76687), (425, 67665), (663, 43375), (975, 29495), (1041, 27625), (1105, 26025), (1275, 22555), (1625, 17697), (1735, 16575), (2125, 13533), (3315, 8675), (4511, 6375), (4875, 5899), (5205, 5525)]