19890644

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{1667}}^1$

素因数の和:1847

約数の個数: 24

約数和(自身を含む): 36896160

約数和(自身を除く): 17005516

約数列:

[1, 2, 4, 19, 38, 76, 157, 314, 628, 1667, 2983, 3334, 5966, 6668, 11932, 31673, 63346, 126692, 261719, 523438, 1046876, 4972661, 9945322, 19890644]

約数ペア:

[(1, 19890644), (2, 9945322), (4, 4972661), (19, 1046876), (38, 523438), (76, 261719), (157, 126692), (314, 63346), (628, 31673), (1667, 11932), (2983, 6668), (3334, 5966)]