20952750

素因数分解:

$2^1\times 3^1\times 5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1$

素因数の和:347

約数の個数: 128

約数和(自身を含む): 64576512

約数和(自身を除く): 43623762

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 25, 26, 30, 35, 39, 42, 50, 65, 70, 75, 78, 91, 105, 125, 130, 150, 175, 182, 195, 210, 250, 273, 307, 325, 350, 375, 390, 455, 525, 546, 614, 650, 750, 875, 910, 921, 975, 1050, 1365, 1535, 1625, 1750, 1842, 1950, 2149, 2275, 2625, 2730, 3070, 3250, 3991, 4298, 4550, 4605, 4875, 5250, 6447, 6825, 7675, 7982, 9210, 9750, 10745, 11375, 11973, 12894, 13650, 15350, 19955, 21490, 22750, 23025, 23946, 27937, 32235, 34125, 38375, 39910, 46050, 53725, 55874, 59865, 64470, 68250, 76750, 83811, 99775, 107450, 115125, 119730, 139685, 161175, 167622, 199550, 230250, 268625, 279370, 299325, 322350, 419055, 498875, 537250, 598650, 698425, 805875, 838110, 997750, 1396850, 1496625, 1611750, 2095275, 2993250, 3492125, 4190550, 6984250, 10476375, 20952750]

約数ペア:

[(1, 20952750), (2, 10476375), (3, 6984250), (5, 4190550), (6, 3492125), (7, 2993250), (10, 2095275), (13, 1611750), (14, 1496625), (15, 1396850), (21, 997750), (25, 838110), (26, 805875), (30, 698425), (35, 598650), (39, 537250), (42, 498875), (50, 419055), (65, 322350), (70, 299325), (75, 279370), (78, 268625), (91, 230250), (105, 199550), (125, 167622), (130, 161175), (150, 139685), (175, 119730), (182, 115125), (195, 107450), (210, 99775), (250, 83811), (273, 76750), (307, 68250), (325, 64470), (350, 59865), (375, 55874), (390, 53725), (455, 46050), (525, 39910), (546, 38375), (614, 34125), (650, 32235), (750, 27937), (875, 23946), (910, 23025), (921, 22750), (975, 21490), (1050, 19955), (1365, 15350), (1535, 13650), (1625, 12894), (1750, 11973), (1842, 11375), (1950, 10745), (2149, 9750), (2275, 9210), (2625, 7982), (2730, 7675), (3070, 6825), (3250, 6447), (3991, 5250), (4298, 4875), (4550, 4605)]