400005000

素因数分解:

$2^3\times 3^3\times 5^4\times {\mathrm{2963}}^1$

素因数の和:2998

約数の個数: 160

約数和(自身を含む): 1388930400

約数和(自身を除く): 988925400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 27, 30, 36, 40, 45, 50, 54, 60, 72, 75, 90, 100, 108, 120, 125, 135, 150, 180, 200, 216, 225, 250, 270, 300, 360, 375, 450, 500, 540, 600, 625, 675, 750, 900, 1000, 1080, 1125, 1250, 1350, 1500, 1800, 1875, 2250, 2500, 2700, 2963, 3000, 3375, 3750, 4500, 5000, 5400, 5625, 5926, 6750, 7500, 8889, 9000, 11250, 11852, 13500, 14815, 15000, 16875, 17778, 22500, 23704, 26667, 27000, 29630, 33750, 35556, 44445, 45000, 53334, 59260, 67500, 71112, 74075, 80001, 88890, 106668, 118520, 133335, 135000, 148150, 160002, 177780, 213336, 222225, 266670, 296300, 320004, 355560, 370375, 400005, 444450, 533340, 592600, 640008, 666675, 740750, 800010, 888900, 1066680, 1111125, 1333350, 1481500, 1600020, 1777800, 1851875, 2000025, 2222250, 2666700, 2963000, 3200040, 3333375, 3703750, 4000050, 4444500, 5333400, 5555625, 6666750, 7407500, 8000100, 8889000, 10000125, 11111250, 13333500, 14815000, 16000200, 16666875, 20000250, 22222500, 26667000, 33333750, 40000500, 44445000, 50000625, 66667500, 80001000, 100001250, 133335000, 200002500, 400005000]

約数ペア:

[(1, 400005000), (2, 200002500), (3, 133335000), (4, 100001250), (5, 80001000), (6, 66667500), (8, 50000625), (9, 44445000), (10, 40000500), (12, 33333750), (15, 26667000), (18, 22222500), (20, 20000250), (24, 16666875), (25, 16000200), (27, 14815000), (30, 13333500), (36, 11111250), (40, 10000125), (45, 8889000), (50, 8000100), (54, 7407500), (60, 6666750), (72, 5555625), (75, 5333400), (90, 4444500), (100, 4000050), (108, 3703750), (120, 3333375), (125, 3200040), (135, 2963000), (150, 2666700), (180, 2222250), (200, 2000025), (216, 1851875), (225, 1777800), (250, 1600020), (270, 1481500), (300, 1333350), (360, 1111125), (375, 1066680), (450, 888900), (500, 800010), (540, 740750), (600, 666675), (625, 640008), (675, 592600), (750, 533340), (900, 444450), (1000, 400005), (1080, 370375), (1125, 355560), (1250, 320004), (1350, 296300), (1500, 266670), (1800, 222225), (1875, 213336), (2250, 177780), (2500, 160002), (2700, 148150), (2963, 135000), (3000, 133335), (3375, 118520), (3750, 106668), (4500, 88890), (5000, 80001), (5400, 74075), (5625, 71112), (5926, 67500), (6750, 59260), (7500, 53334), (8889, 45000), (9000, 44445), (11250, 35556), (11852, 33750), (13500, 29630), (14815, 27000), (15000, 26667), (16875, 23704), (17778, 22500)]