25870000

素因数分解:

$2^4\times 5^4\times {\mathrm{13}}^1\times {\mathrm{199}}^1$

素因数の和:240

約数の個数: 100

約数和(自身を含む): 67790800

約数和(自身を除く): 41920800

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 125, 130, 199, 200, 208, 250, 260, 325, 398, 400, 500, 520, 625, 650, 796, 995, 1000, 1040, 1250, 1300, 1592, 1625, 1990, 2000, 2500, 2587, 2600, 3184, 3250, 3980, 4975, 5000, 5174, 5200, 6500, 7960, 8125, 9950, 10000, 10348, 12935, 13000, 15920, 16250, 19900, 20696, 24875, 25870, 26000, 32500, 39800, 41392, 49750, 51740, 64675, 65000, 79600, 99500, 103480, 124375, 129350, 130000, 199000, 206960, 248750, 258700, 323375, 398000, 497500, 517400, 646750, 995000, 1034800, 1293500, 1616875, 1990000, 2587000, 3233750, 5174000, 6467500, 12935000, 25870000]

約数ペア:

[(1, 25870000), (2, 12935000), (4, 6467500), (5, 5174000), (8, 3233750), (10, 2587000), (13, 1990000), (16, 1616875), (20, 1293500), (25, 1034800), (26, 995000), (40, 646750), (50, 517400), (52, 497500), (65, 398000), (80, 323375), (100, 258700), (104, 248750), (125, 206960), (130, 199000), (199, 130000), (200, 129350), (208, 124375), (250, 103480), (260, 99500), (325, 79600), (398, 65000), (400, 64675), (500, 51740), (520, 49750), (625, 41392), (650, 39800), (796, 32500), (995, 26000), (1000, 25870), (1040, 24875), (1250, 20696), (1300, 19900), (1592, 16250), (1625, 15920), (1990, 13000), (2000, 12935), (2500, 10348), (2587, 10000), (2600, 9950), (3184, 8125), (3250, 7960), (3980, 6500), (4975, 5200), (5000, 5174)]