28491659

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:227

約数の個数: 32

約数和(自身を含む): 36288000

約数和(自身を除く): 7796341

約数列:

[1, 7, 19, 29, 83, 89, 133, 203, 551, 581, 623, 1577, 1691, 2407, 2581, 3857, 7387, 11039, 11837, 16849, 18067, 45733, 49039, 51709, 140353, 214223, 320131, 343273, 982471, 1499561, 4070237, 28491659]

約数ペア:

[(1, 28491659), (7, 4070237), (19, 1499561), (29, 982471), (83, 343273), (89, 320131), (133, 214223), (203, 140353), (551, 51709), (581, 49039), (623, 45733), (1577, 18067), (1691, 16849), (2407, 11837), (2581, 11039), (3857, 7387)]