18940075

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{9839}}^1$

素因数の和:9867

約数の個数: 24

約数和(自身を含む): 29283840

約数和(自身を除く): 10343765

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 175, 275, 385, 1925, 9839, 49195, 68873, 108229, 245975, 344365, 541145, 757603, 1721825, 2705725, 3788015, 18940075]

約数ペア:

[(1, 18940075), (5, 3788015), (7, 2705725), (11, 1721825), (25, 757603), (35, 541145), (55, 344365), (77, 245975), (175, 108229), (275, 68873), (385, 49195), (1925, 9839)]