21238295

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{593}}^1$

素因数の和:659

約数の個数: 32

約数和(自身を含む): 29937600

約数和(自身を除く): 8699305

約数列:

[1, 5, 13, 19, 29, 65, 95, 145, 247, 377, 551, 593, 1235, 1885, 2755, 2965, 7163, 7709, 11267, 17197, 35815, 38545, 56335, 85985, 146471, 223561, 326743, 732355, 1117805, 1633715, 4247659, 21238295]

約数ペア:

[(1, 21238295), (5, 4247659), (13, 1633715), (19, 1117805), (29, 732355), (65, 326743), (95, 223561), (145, 146471), (247, 85985), (377, 56335), (551, 38545), (593, 35815), (1235, 17197), (1885, 11267), (2755, 7709), (2965, 7163)]