20265921

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{443}}^1$

素因数の和:502

約数の個数: 48

約数和(自身を含む): 34909056

約数和(自身を除く): 14643135

約数列:

[1, 3, 9, 13, 17, 23, 39, 51, 69, 117, 153, 207, 221, 299, 391, 443, 663, 897, 1173, 1329, 1989, 2691, 3519, 3987, 5083, 5759, 7531, 10189, 15249, 17277, 22593, 30567, 45747, 51831, 67779, 91701, 97903, 132457, 173213, 293709, 397371, 519639, 881127, 1192113, 1558917, 2251769, 6755307, 20265921]

約数ペア:

[(1, 20265921), (3, 6755307), (9, 2251769), (13, 1558917), (17, 1192113), (23, 881127), (39, 519639), (51, 397371), (69, 293709), (117, 173213), (153, 132457), (207, 97903), (221, 91701), (299, 67779), (391, 51831), (443, 45747), (663, 30567), (897, 22593), (1173, 17277), (1329, 15249), (1989, 10189), (2691, 7531), (3519, 5759), (3987, 5083)]