21218000

素因数分解:

$2^4\times 5^3\times {\mathrm{103}}^2$

素因数の和:229

約数の個数: 60

約数和(自身を含む): 51808068

約数和(自身を除く): 30590068

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 103, 125, 200, 206, 250, 400, 412, 500, 515, 824, 1000, 1030, 1648, 2000, 2060, 2575, 4120, 5150, 8240, 10300, 10609, 12875, 20600, 21218, 25750, 41200, 42436, 51500, 53045, 84872, 103000, 106090, 169744, 206000, 212180, 265225, 424360, 530450, 848720, 1060900, 1326125, 2121800, 2652250, 4243600, 5304500, 10609000, 21218000]

約数ペア:

[(1, 21218000), (2, 10609000), (4, 5304500), (5, 4243600), (8, 2652250), (10, 2121800), (16, 1326125), (20, 1060900), (25, 848720), (40, 530450), (50, 424360), (80, 265225), (100, 212180), (103, 206000), (125, 169744), (200, 106090), (206, 103000), (250, 84872), (400, 53045), (412, 51500), (500, 42436), (515, 41200), (824, 25750), (1000, 21218), (1030, 20600), (1648, 12875), (2000, 10609), (2060, 10300), (2575, 8240), (4120, 5150)]