21006098128

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{69099007}}^1$

素因数の和:69099034

約数の個数: 20

約数和(自身を含む): 42841384960

約数和(自身を除く): 21835286832

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 69099007, 138198014, 276396028, 552792056, 1105584112, 1312881133, 2625762266, 5251524532, 10503049064, 21006098128]

約数ペア:

[(1, 21006098128), (2, 10503049064), (4, 5251524532), (8, 2625762266), (16, 1312881133), (19, 1105584112), (38, 552792056), (76, 276396028), (152, 138198014), (304, 69099007)]