20123883

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{659}}^1$

素因数の和:713

約数の個数: 40

約数和(自身を含む): 33541200

約数和(自身を除く): 13417317

約数列:

[1, 3, 9, 13, 27, 29, 39, 81, 87, 117, 261, 351, 377, 659, 783, 1053, 1131, 1977, 2349, 3393, 5931, 8567, 10179, 17793, 19111, 25701, 30537, 53379, 57333, 77103, 171999, 231309, 248443, 515997, 693927, 745329, 1547991, 2235987, 6707961, 20123883]

約数ペア:

[(1, 20123883), (3, 6707961), (9, 2235987), (13, 1547991), (27, 745329), (29, 693927), (39, 515997), (81, 248443), (87, 231309), (117, 171999), (261, 77103), (351, 57333), (377, 53379), (659, 30537), (783, 25701), (1053, 19111), (1131, 17793), (1977, 10179), (2349, 8567), (3393, 5931)]