18220215

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{419}}^1$

素因数の和:663

約数の個数: 32

約数和(自身を含む): 31610880

約数和(自身を除く): 13390665

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 223, 419, 669, 1115, 1257, 2095, 2899, 3345, 5447, 6285, 8697, 14495, 16341, 27235, 43485, 81705, 93437, 280311, 467185, 1214681, 1401555, 3644043, 6073405, 18220215]

約数ペア:

[(1, 18220215), (3, 6073405), (5, 3644043), (13, 1401555), (15, 1214681), (39, 467185), (65, 280311), (195, 93437), (223, 81705), (419, 43485), (669, 27235), (1115, 16341), (1257, 14495), (2095, 8697), (2899, 6285), (3345, 5447)]