20722500

素因数分解:

$2^2\times 3^3\times 5^4\times {\mathrm{307}}^1$

素因数の和:340

約数の個数: 120

約数和(自身を含む): 67353440

約数和(自身を除く): 46630940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 45, 50, 54, 60, 75, 90, 100, 108, 125, 135, 150, 180, 225, 250, 270, 300, 307, 375, 450, 500, 540, 614, 625, 675, 750, 900, 921, 1125, 1228, 1250, 1350, 1500, 1535, 1842, 1875, 2250, 2500, 2700, 2763, 3070, 3375, 3684, 3750, 4500, 4605, 5526, 5625, 6140, 6750, 7500, 7675, 8289, 9210, 11052, 11250, 13500, 13815, 15350, 16578, 16875, 18420, 22500, 23025, 27630, 30700, 33156, 33750, 38375, 41445, 46050, 55260, 67500, 69075, 76750, 82890, 92100, 115125, 138150, 153500, 165780, 191875, 207225, 230250, 276300, 345375, 383750, 414450, 460500, 575625, 690750, 767500, 828900, 1036125, 1151250, 1381500, 1726875, 2072250, 2302500, 3453750, 4144500, 5180625, 6907500, 10361250, 20722500]

約数ペア:

[(1, 20722500), (2, 10361250), (3, 6907500), (4, 5180625), (5, 4144500), (6, 3453750), (9, 2302500), (10, 2072250), (12, 1726875), (15, 1381500), (18, 1151250), (20, 1036125), (25, 828900), (27, 767500), (30, 690750), (36, 575625), (45, 460500), (50, 414450), (54, 383750), (60, 345375), (75, 276300), (90, 230250), (100, 207225), (108, 191875), (125, 165780), (135, 153500), (150, 138150), (180, 115125), (225, 92100), (250, 82890), (270, 76750), (300, 69075), (307, 67500), (375, 55260), (450, 46050), (500, 41445), (540, 38375), (614, 33750), (625, 33156), (675, 30700), (750, 27630), (900, 23025), (921, 22500), (1125, 18420), (1228, 16875), (1250, 16578), (1350, 15350), (1500, 13815), (1535, 13500), (1842, 11250), (1875, 11052), (2250, 9210), (2500, 8289), (2700, 7675), (2763, 7500), (3070, 6750), (3375, 6140), (3684, 5625), (3750, 5526), (4500, 4605)]