21561774

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{491}}^1\times {\mathrm{563}}^1$

素因数の和:1072

約数の個数: 32

約数和(自身を含む): 46617984

約数和(自身を除く): 25056210

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 491, 563, 982, 1126, 1473, 1689, 2946, 3378, 6383, 7319, 12766, 14638, 19149, 21957, 38298, 43914, 276433, 552866, 829299, 1658598, 3593629, 7187258, 10780887, 21561774]

約数ペア:

[(1, 21561774), (2, 10780887), (3, 7187258), (6, 3593629), (13, 1658598), (26, 829299), (39, 552866), (78, 276433), (491, 43914), (563, 38298), (982, 21957), (1126, 19149), (1473, 14638), (1689, 12766), (2946, 7319), (3378, 6383)]