19286980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{15809}}^1$

素因数の和:15879

約数の個数: 24

約数和(自身を含む): 41169240

約数和(自身を除く): 21882260

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 15809, 31618, 63236, 79045, 158090, 316180, 964349, 1928698, 3857396, 4821745, 9643490, 19286980]

約数ペア:

[(1, 19286980), (2, 9643490), (4, 4821745), (5, 3857396), (10, 1928698), (20, 964349), (61, 316180), (122, 158090), (244, 79045), (305, 63236), (610, 31618), (1220, 15809)]