20577375

素因数分解:

$3^3\times 5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1$

素因数の和:111

約数の個数: 128

約数和(自身を含む): 47523840

約数和(自身を除く): 26946465

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 25, 27, 35, 39, 45, 63, 65, 67, 75, 91, 105, 117, 125, 135, 175, 189, 195, 201, 225, 273, 315, 325, 335, 351, 375, 455, 469, 525, 585, 603, 675, 819, 871, 875, 945, 975, 1005, 1125, 1365, 1407, 1575, 1625, 1675, 1755, 1809, 2275, 2345, 2457, 2613, 2625, 2925, 3015, 3375, 4095, 4221, 4355, 4725, 4875, 5025, 6097, 6825, 7035, 7839, 7875, 8375, 8775, 9045, 11375, 11725, 12285, 12663, 13065, 14625, 15075, 18291, 20475, 21105, 21775, 23517, 23625, 25125, 30485, 34125, 35175, 39195, 43875, 45225, 54873, 58625, 61425, 63315, 65325, 75375, 91455, 102375, 105525, 108875, 117585, 152425, 164619, 175875, 195975, 226125, 274365, 307125, 316575, 326625, 457275, 527625, 587925, 762125, 823095, 979875, 1371825, 1582875, 2286375, 2939625, 4115475, 6859125, 20577375]

約数ペア:

[(1, 20577375), (3, 6859125), (5, 4115475), (7, 2939625), (9, 2286375), (13, 1582875), (15, 1371825), (21, 979875), (25, 823095), (27, 762125), (35, 587925), (39, 527625), (45, 457275), (63, 326625), (65, 316575), (67, 307125), (75, 274365), (91, 226125), (105, 195975), (117, 175875), (125, 164619), (135, 152425), (175, 117585), (189, 108875), (195, 105525), (201, 102375), (225, 91455), (273, 75375), (315, 65325), (325, 63315), (335, 61425), (351, 58625), (375, 54873), (455, 45225), (469, 43875), (525, 39195), (585, 35175), (603, 34125), (675, 30485), (819, 25125), (871, 23625), (875, 23517), (945, 21775), (975, 21105), (1005, 20475), (1125, 18291), (1365, 15075), (1407, 14625), (1575, 13065), (1625, 12663), (1675, 12285), (1755, 11725), (1809, 11375), (2275, 9045), (2345, 8775), (2457, 8375), (2613, 7875), (2625, 7839), (2925, 7035), (3015, 6825), (3375, 6097), (4095, 5025), (4221, 4875), (4355, 4725)]