21990318

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{74797}}^1$

素因数の和:74816

約数の個数: 24

約数和(自身を含む): 51161832

約数和(自身を除く): 29171514

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 147, 294, 74797, 149594, 224391, 448782, 523579, 1047158, 1570737, 3141474, 3665053, 7330106, 10995159, 21990318]

約数ペア:

[(1, 21990318), (2, 10995159), (3, 7330106), (6, 3665053), (7, 3141474), (14, 1570737), (21, 1047158), (42, 523579), (49, 448782), (98, 224391), (147, 149594), (294, 74797)]