21801585

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{4861}}^1$

素因数の和:4905

約数の個数: 32

約数和(自身を含む): 39207168

約数和(自身を除く): 17405583

約数列:

[1, 3, 5, 13, 15, 23, 39, 65, 69, 115, 195, 299, 345, 897, 1495, 4485, 4861, 14583, 24305, 63193, 72915, 111803, 189579, 315965, 335409, 559015, 947895, 1453439, 1677045, 4360317, 7267195, 21801585]

約数ペア:

[(1, 21801585), (3, 7267195), (5, 4360317), (13, 1677045), (15, 1453439), (23, 947895), (39, 559015), (65, 335409), (69, 315965), (115, 189579), (195, 111803), (299, 72915), (345, 63193), (897, 24305), (1495, 14583), (4485, 4861)]