20974538

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{491}}^1$

素因数の和:590

約数の個数: 32

約数和(自身を含む): 35707392

約数和(自身を除く): 14732854

約数列:

[1, 2, 13, 26, 31, 53, 62, 106, 403, 491, 689, 806, 982, 1378, 1643, 3286, 6383, 12766, 15221, 21359, 26023, 30442, 42718, 52046, 197873, 338299, 395746, 676598, 806713, 1613426, 10487269, 20974538]

約数ペア:

[(1, 20974538), (2, 10487269), (13, 1613426), (26, 806713), (31, 676598), (53, 395746), (62, 338299), (106, 197873), (403, 52046), (491, 42718), (689, 30442), (806, 26023), (982, 21359), (1378, 15221), (1643, 12766), (3286, 6383)]