20895459

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{173}}^1$

素因数の和:371

約数の個数: 32

約数和(自身を含む): 31960320

約数和(自身を除く): 11064861

約数列:

[1, 3, 13, 19, 39, 57, 163, 173, 247, 489, 519, 741, 2119, 2249, 3097, 3287, 6357, 6747, 9291, 9861, 28199, 40261, 42731, 84597, 120783, 128193, 366587, 535781, 1099761, 1607343, 6965153, 20895459]

約数ペア:

[(1, 20895459), (3, 6965153), (13, 1607343), (19, 1099761), (39, 535781), (57, 366587), (163, 128193), (173, 120783), (247, 84597), (489, 42731), (519, 40261), (741, 28199), (2119, 9861), (2249, 9291), (3097, 6747), (3287, 6357)]