20011761

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{431}}^1$

素因数の和:522

約数の個数: 48

約数和(自身を含む): 36661248

約数和(自身を除く): 16649487

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 67, 77, 99, 201, 231, 431, 469, 603, 693, 737, 1293, 1407, 2211, 3017, 3879, 4221, 4741, 5159, 6633, 9051, 14223, 15477, 27153, 28877, 33187, 42669, 46431, 86631, 99561, 202139, 259893, 298683, 317647, 606417, 952941, 1819251, 2223529, 2858823, 6670587, 20011761]

約数ペア:

[(1, 20011761), (3, 6670587), (7, 2858823), (9, 2223529), (11, 1819251), (21, 952941), (33, 606417), (63, 317647), (67, 298683), (77, 259893), (99, 202139), (201, 99561), (231, 86631), (431, 46431), (469, 42669), (603, 33187), (693, 28877), (737, 27153), (1293, 15477), (1407, 14223), (2211, 9051), (3017, 6633), (3879, 5159), (4221, 4741)]