21502000

素因数分解:

$2^4\times 5^3\times {\mathrm{13}}^1\times {\mathrm{827}}^1$

素因数の和:863

約数の個数: 80

約数和(自身を含む): 56058912

約数和(自身を除く): 34556912

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 125, 130, 200, 208, 250, 260, 325, 400, 500, 520, 650, 827, 1000, 1040, 1300, 1625, 1654, 2000, 2600, 3250, 3308, 4135, 5200, 6500, 6616, 8270, 10751, 13000, 13232, 16540, 20675, 21502, 26000, 33080, 41350, 43004, 53755, 66160, 82700, 86008, 103375, 107510, 165400, 172016, 206750, 215020, 268775, 330800, 413500, 430040, 537550, 827000, 860080, 1075100, 1343875, 1654000, 2150200, 2687750, 4300400, 5375500, 10751000, 21502000]

約数ペア:

[(1, 21502000), (2, 10751000), (4, 5375500), (5, 4300400), (8, 2687750), (10, 2150200), (13, 1654000), (16, 1343875), (20, 1075100), (25, 860080), (26, 827000), (40, 537550), (50, 430040), (52, 413500), (65, 330800), (80, 268775), (100, 215020), (104, 206750), (125, 172016), (130, 165400), (200, 107510), (208, 103375), (250, 86008), (260, 82700), (325, 66160), (400, 53755), (500, 43004), (520, 41350), (650, 33080), (827, 26000), (1000, 21502), (1040, 20675), (1300, 16540), (1625, 13232), (1654, 13000), (2000, 10751), (2600, 8270), (3250, 6616), (3308, 6500), (4135, 5200)]