19821753

素因数分解:

$3^5\times 7^1\times {\mathrm{43}}^1\times {\mathrm{271}}^1$

素因数の和:336

約数の個数: 48

約数和(自身を含む): 34850816

約数和(自身を除く): 15029063

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 81, 129, 189, 243, 271, 301, 387, 567, 813, 903, 1161, 1701, 1897, 2439, 2709, 3483, 5691, 7317, 8127, 10449, 11653, 17073, 21951, 24381, 34959, 51219, 65853, 73143, 81571, 104877, 153657, 244713, 314631, 460971, 734139, 943893, 2202417, 2831679, 6607251, 19821753]

約数ペア:

[(1, 19821753), (3, 6607251), (7, 2831679), (9, 2202417), (21, 943893), (27, 734139), (43, 460971), (63, 314631), (81, 244713), (129, 153657), (189, 104877), (243, 81571), (271, 73143), (301, 65853), (387, 51219), (567, 34959), (813, 24381), (903, 21951), (1161, 17073), (1701, 11653), (1897, 10449), (2439, 8127), (2709, 7317), (3483, 5691)]