21689488

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{71347}}^1$

素因数の和:71374

約数の個数: 20

約数和(自身を含む): 44235760

約数和(自身を除く): 22546272

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 71347, 142694, 285388, 570776, 1141552, 1355593, 2711186, 5422372, 10844744, 21689488]

約数ペア:

[(1, 21689488), (2, 10844744), (4, 5422372), (8, 2711186), (16, 1355593), (19, 1141552), (38, 570776), (76, 285388), (152, 142694), (304, 71347)]