21671200

素因数分解:

$2^5\times 5^2\times {\mathrm{103}}^1\times {\mathrm{263}}^1$

素因数の和:386

約数の個数: 72

約数和(自身を含む): 53621568

約数和(自身を除く): 31950368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 103, 160, 200, 206, 263, 400, 412, 515, 526, 800, 824, 1030, 1052, 1315, 1648, 2060, 2104, 2575, 2630, 3296, 4120, 4208, 5150, 5260, 6575, 8240, 8416, 10300, 10520, 13150, 16480, 20600, 21040, 26300, 27089, 41200, 42080, 52600, 54178, 82400, 105200, 108356, 135445, 210400, 216712, 270890, 433424, 541780, 677225, 866848, 1083560, 1354450, 2167120, 2708900, 4334240, 5417800, 10835600, 21671200]

約数ペア:

[(1, 21671200), (2, 10835600), (4, 5417800), (5, 4334240), (8, 2708900), (10, 2167120), (16, 1354450), (20, 1083560), (25, 866848), (32, 677225), (40, 541780), (50, 433424), (80, 270890), (100, 216712), (103, 210400), (160, 135445), (200, 108356), (206, 105200), (263, 82400), (400, 54178), (412, 52600), (515, 42080), (526, 41200), (800, 27089), (824, 26300), (1030, 21040), (1052, 20600), (1315, 16480), (1648, 13150), (2060, 10520), (2104, 10300), (2575, 8416), (2630, 8240), (3296, 6575), (4120, 5260), (4208, 5150)]