80002000

素因数分解:

$2^4\times 5^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1$

素因数の和:234

約数の個数: 160

約数和(自身を含む): 221798304

約数和(自身を除く): 141796304

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 25, 26, 34, 40, 50, 52, 65, 68, 80, 85, 100, 104, 125, 130, 136, 170, 181, 200, 208, 221, 250, 260, 272, 325, 340, 362, 400, 425, 442, 500, 520, 650, 680, 724, 850, 884, 905, 1000, 1040, 1105, 1300, 1360, 1448, 1625, 1700, 1768, 1810, 2000, 2125, 2210, 2353, 2600, 2896, 3077, 3250, 3400, 3536, 3620, 4250, 4420, 4525, 4706, 5200, 5525, 6154, 6500, 6800, 7240, 8500, 8840, 9050, 9412, 11050, 11765, 12308, 13000, 14480, 15385, 17000, 17680, 18100, 18824, 22100, 22625, 23530, 24616, 26000, 27625, 30770, 34000, 36200, 37648, 40001, 44200, 45250, 47060, 49232, 55250, 58825, 61540, 72400, 76925, 80002, 88400, 90500, 94120, 110500, 117650, 123080, 153850, 160004, 181000, 188240, 200005, 221000, 235300, 246160, 294125, 307700, 320008, 362000, 384625, 400010, 442000, 470600, 588250, 615400, 640016, 769250, 800020, 941200, 1000025, 1176500, 1230800, 1538500, 1600040, 2000050, 2353000, 3077000, 3200080, 4000100, 4706000, 5000125, 6154000, 8000200, 10000250, 16000400, 20000500, 40001000, 80002000]

約数ペア:

[(1, 80002000), (2, 40001000), (4, 20000500), (5, 16000400), (8, 10000250), (10, 8000200), (13, 6154000), (16, 5000125), (17, 4706000), (20, 4000100), (25, 3200080), (26, 3077000), (34, 2353000), (40, 2000050), (50, 1600040), (52, 1538500), (65, 1230800), (68, 1176500), (80, 1000025), (85, 941200), (100, 800020), (104, 769250), (125, 640016), (130, 615400), (136, 588250), (170, 470600), (181, 442000), (200, 400010), (208, 384625), (221, 362000), (250, 320008), (260, 307700), (272, 294125), (325, 246160), (340, 235300), (362, 221000), (400, 200005), (425, 188240), (442, 181000), (500, 160004), (520, 153850), (650, 123080), (680, 117650), (724, 110500), (850, 94120), (884, 90500), (905, 88400), (1000, 80002), (1040, 76925), (1105, 72400), (1300, 61540), (1360, 58825), (1448, 55250), (1625, 49232), (1700, 47060), (1768, 45250), (1810, 44200), (2000, 40001), (2125, 37648), (2210, 36200), (2353, 34000), (2600, 30770), (2896, 27625), (3077, 26000), (3250, 24616), (3400, 23530), (3536, 22625), (3620, 22100), (4250, 18824), (4420, 18100), (4525, 17680), (4706, 17000), (5200, 15385), (5525, 14480), (6154, 13000), (6500, 12308), (6800, 11765), (7240, 11050), (8500, 9412), (8840, 9050)]