20861874

素因数分解:

$2^1\times 3^4\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{509}}^1$

素因数の和:557

約数の個数: 80

約数和(自身を含む): 53317440

約数和(自身を除く): 32455566

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 23, 27, 33, 46, 54, 66, 69, 81, 99, 138, 162, 198, 207, 253, 297, 414, 506, 509, 594, 621, 759, 891, 1018, 1242, 1518, 1527, 1782, 1863, 2277, 3054, 3726, 4554, 4581, 5599, 6831, 9162, 11198, 11707, 13662, 13743, 16797, 20493, 23414, 27486, 33594, 35121, 40986, 41229, 50391, 70242, 82458, 100782, 105363, 128777, 151173, 210726, 257554, 302346, 316089, 386331, 453519, 632178, 772662, 907038, 948267, 1158993, 1896534, 2317986, 3476979, 6953958, 10430937, 20861874]

約数ペア:

[(1, 20861874), (2, 10430937), (3, 6953958), (6, 3476979), (9, 2317986), (11, 1896534), (18, 1158993), (22, 948267), (23, 907038), (27, 772662), (33, 632178), (46, 453519), (54, 386331), (66, 316089), (69, 302346), (81, 257554), (99, 210726), (138, 151173), (162, 128777), (198, 105363), (207, 100782), (253, 82458), (297, 70242), (414, 50391), (506, 41229), (509, 40986), (594, 35121), (621, 33594), (759, 27486), (891, 23414), (1018, 20493), (1242, 16797), (1518, 13743), (1527, 13662), (1782, 11707), (1863, 11198), (2277, 9162), (3054, 6831), (3726, 5599), (4554, 4581)]