19971215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{2437}}^1$

素因数の和:2602

約数の個数: 16

約数和(自身を含む): 26330400

約数和(自身を除く): 6359185

約数列:

[1, 5, 11, 55, 149, 745, 1639, 2437, 8195, 12185, 26807, 134035, 363113, 1815565, 3994243, 19971215]

約数ペア:

[(1, 19971215), (5, 3994243), (11, 1815565), (55, 363113), (149, 134035), (745, 26807), (1639, 12185), (2437, 8195)]