19201580

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{15739}}^1$

素因数の和:15809

約数の個数: 24

約数和(自身を含む): 40986960

約数和(自身を除く): 21785380

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 15739, 31478, 62956, 78695, 157390, 314780, 960079, 1920158, 3840316, 4800395, 9600790, 19201580]

約数ペア:

[(1, 19201580), (2, 9600790), (4, 4800395), (5, 3840316), (10, 1920158), (20, 960079), (61, 314780), (122, 157390), (244, 78695), (305, 62956), (610, 31478), (1220, 15739)]