21806960

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{5563}}^1$

素因数の和:5590

約数の個数: 60

約数和(自身を含む): 58989528

約数和(自身を除く): 37182568

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 5563, 11126, 22252, 27815, 38941, 44504, 55630, 77882, 89008, 111260, 155764, 194705, 222520, 272587, 311528, 389410, 445040, 545174, 623056, 778820, 1090348, 1362935, 1557640, 2180696, 2725870, 3115280, 4361392, 5451740, 10903480, 21806960]

約数ペア:

[(1, 21806960), (2, 10903480), (4, 5451740), (5, 4361392), (7, 3115280), (8, 2725870), (10, 2180696), (14, 1557640), (16, 1362935), (20, 1090348), (28, 778820), (35, 623056), (40, 545174), (49, 445040), (56, 389410), (70, 311528), (80, 272587), (98, 222520), (112, 194705), (140, 155764), (196, 111260), (245, 89008), (280, 77882), (392, 55630), (490, 44504), (560, 38941), (784, 27815), (980, 22252), (1960, 11126), (3920, 5563)]