21301605

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2801}}^1$

素因数の和:2838

約数の個数: 36

約数和(自身を含む): 39995748

約数和(自身を除く): 18694143

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 169, 195, 507, 585, 845, 1521, 2535, 2801, 7605, 8403, 14005, 25209, 36413, 42015, 109239, 126045, 182065, 327717, 473369, 546195, 1420107, 1638585, 2366845, 4260321, 7100535, 21301605]

約数ペア:

[(1, 21301605), (3, 7100535), (5, 4260321), (9, 2366845), (13, 1638585), (15, 1420107), (39, 546195), (45, 473369), (65, 327717), (117, 182065), (169, 126045), (195, 109239), (507, 42015), (585, 36413), (845, 25209), (1521, 14005), (2535, 8403), (2801, 7605)]