18690820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{54973}}^1$

素因数の和:54999

約数の個数: 24

約数和(自身を含む): 41560344

約数和(自身を除く): 22869524

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 54973, 109946, 219892, 274865, 549730, 934541, 1099460, 1869082, 3738164, 4672705, 9345410, 18690820]

約数ペア:

[(1, 18690820), (2, 9345410), (4, 4672705), (5, 3738164), (10, 1869082), (17, 1099460), (20, 934541), (34, 549730), (68, 274865), (85, 219892), (170, 109946), (340, 54973)]