20470125

素因数分解:

$3^1\times 5^3\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:80

約数の個数: 96

約数和(自身を含む): 41109120

約数和(自身を除く): 20638995

約数列:

[1, 3, 5, 13, 15, 17, 19, 25, 39, 51, 57, 65, 75, 85, 95, 125, 169, 195, 221, 247, 255, 285, 323, 325, 375, 425, 475, 507, 663, 741, 845, 969, 975, 1105, 1235, 1275, 1425, 1615, 1625, 2125, 2375, 2535, 2873, 3211, 3315, 3705, 4199, 4225, 4845, 4875, 5525, 6175, 6375, 7125, 8075, 8619, 9633, 12597, 12675, 14365, 16055, 16575, 18525, 20995, 21125, 24225, 27625, 30875, 40375, 43095, 48165, 54587, 62985, 63375, 71825, 80275, 82875, 92625, 104975, 121125, 163761, 215475, 240825, 272935, 314925, 359125, 401375, 524875, 818805, 1077375, 1204125, 1364675, 1574625, 4094025, 6823375, 20470125]

約数ペア:

[(1, 20470125), (3, 6823375), (5, 4094025), (13, 1574625), (15, 1364675), (17, 1204125), (19, 1077375), (25, 818805), (39, 524875), (51, 401375), (57, 359125), (65, 314925), (75, 272935), (85, 240825), (95, 215475), (125, 163761), (169, 121125), (195, 104975), (221, 92625), (247, 82875), (255, 80275), (285, 71825), (323, 63375), (325, 62985), (375, 54587), (425, 48165), (475, 43095), (507, 40375), (663, 30875), (741, 27625), (845, 24225), (969, 21125), (975, 20995), (1105, 18525), (1235, 16575), (1275, 16055), (1425, 14365), (1615, 12675), (1625, 12597), (2125, 9633), (2375, 8619), (2535, 8075), (2873, 7125), (3211, 6375), (3315, 6175), (3705, 5525), (4199, 4875), (4225, 4845)]