21783573

素因数分解:

$3^4\times 7^1\times {\mathrm{103}}^1\times {\mathrm{373}}^1$

素因数の和:495

約数の個数: 40

約数和(自身を含む): 37651328

約数和(自身を除く): 15867755

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 103, 189, 309, 373, 567, 721, 927, 1119, 2163, 2611, 2781, 3357, 6489, 7833, 8343, 10071, 19467, 23499, 30213, 38419, 58401, 70497, 115257, 211491, 268933, 345771, 806799, 1037313, 2420397, 3111939, 7261191, 21783573]

約数ペア:

[(1, 21783573), (3, 7261191), (7, 3111939), (9, 2420397), (21, 1037313), (27, 806799), (63, 345771), (81, 268933), (103, 211491), (189, 115257), (309, 70497), (373, 58401), (567, 38419), (721, 30213), (927, 23499), (1119, 19467), (2163, 10071), (2611, 8343), (2781, 7833), (3357, 6489)]