2155491

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1$

素因数の和:137

約数の個数: 40

約数和(自身を含む): 3659040

約数和(自身を除く): 1503549

約数列:

[1, 3, 9, 13, 23, 27, 39, 69, 81, 89, 117, 207, 267, 299, 351, 621, 801, 897, 1053, 1157, 1863, 2047, 2403, 2691, 3471, 6141, 7209, 8073, 10413, 18423, 24219, 26611, 31239, 55269, 79833, 93717, 165807, 239499, 718497, 2155491]

約数ペア:

[(1, 2155491), (3, 718497), (9, 239499), (13, 165807), (23, 93717), (27, 79833), (39, 55269), (69, 31239), (81, 26611), (89, 24219), (117, 18423), (207, 10413), (267, 8073), (299, 7209), (351, 6141), (621, 3471), (801, 2691), (897, 2403), (1053, 2047), (1157, 1863)]