21356000

素因数分解:

$2^5\times 5^3\times {\mathrm{19}}^1\times {\mathrm{281}}^1$

素因数の和:325

約数の個数: 96

約数和(自身を含む): 55429920

約数和(自身を除く): 34073920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 38, 40, 50, 76, 80, 95, 100, 125, 152, 160, 190, 200, 250, 281, 304, 380, 400, 475, 500, 562, 608, 760, 800, 950, 1000, 1124, 1405, 1520, 1900, 2000, 2248, 2375, 2810, 3040, 3800, 4000, 4496, 4750, 5339, 5620, 7025, 7600, 8992, 9500, 10678, 11240, 14050, 15200, 19000, 21356, 22480, 26695, 28100, 35125, 38000, 42712, 44960, 53390, 56200, 70250, 76000, 85424, 106780, 112400, 133475, 140500, 170848, 213560, 224800, 266950, 281000, 427120, 533900, 562000, 667375, 854240, 1067800, 1124000, 1334750, 2135600, 2669500, 4271200, 5339000, 10678000, 21356000]

約数ペア:

[(1, 21356000), (2, 10678000), (4, 5339000), (5, 4271200), (8, 2669500), (10, 2135600), (16, 1334750), (19, 1124000), (20, 1067800), (25, 854240), (32, 667375), (38, 562000), (40, 533900), (50, 427120), (76, 281000), (80, 266950), (95, 224800), (100, 213560), (125, 170848), (152, 140500), (160, 133475), (190, 112400), (200, 106780), (250, 85424), (281, 76000), (304, 70250), (380, 56200), (400, 53390), (475, 44960), (500, 42712), (562, 38000), (608, 35125), (760, 28100), (800, 26695), (950, 22480), (1000, 21356), (1124, 19000), (1405, 15200), (1520, 14050), (1900, 11240), (2000, 10678), (2248, 9500), (2375, 8992), (2810, 7600), (3040, 7025), (3800, 5620), (4000, 5339), (4496, 4750)]