21305958

素因数分解:

$2^1\times 3^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{2531}}^1$

素因数の和:2620

約数の個数: 32

約数和(自身を含む): 45211392

約数和(自身を除く): 23905434

約数列:

[1, 2, 3, 6, 23, 46, 61, 69, 122, 138, 183, 366, 1403, 2531, 2806, 4209, 5062, 7593, 8418, 15186, 58213, 116426, 154391, 174639, 308782, 349278, 463173, 926346, 3550993, 7101986, 10652979, 21305958]

約数ペア:

[(1, 21305958), (2, 10652979), (3, 7101986), (6, 3550993), (23, 926346), (46, 463173), (61, 349278), (69, 308782), (122, 174639), (138, 154391), (183, 116426), (366, 58213), (1403, 15186), (2531, 8418), (2806, 7593), (4209, 5062)]