20347145

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{227}}^1$

素因数の和:449

約数の個数: 32

約数和(自身を含む): 30336768

約数和(自身を除く): 9989623

約数列:

[1, 5, 7, 13, 35, 65, 91, 197, 227, 455, 985, 1135, 1379, 1589, 2561, 2951, 6895, 7945, 12805, 14755, 17927, 20657, 44719, 89635, 103285, 223595, 313033, 581347, 1565165, 2906735, 4069429, 20347145]

約数ペア:

[(1, 20347145), (5, 4069429), (7, 2906735), (13, 1565165), (35, 581347), (65, 313033), (91, 223595), (197, 103285), (227, 89635), (455, 44719), (985, 20657), (1135, 17927), (1379, 14755), (1589, 12805), (2561, 7945), (2951, 6895)]