21391758

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{62549}}^1$

素因数の和:62576

約数の個数: 24

約数和(自身を含む): 48789000

約数和(自身を除く): 27397242

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 171, 342, 62549, 125098, 187647, 375294, 562941, 1125882, 1188431, 2376862, 3565293, 7130586, 10695879, 21391758]

約数ペア:

[(1, 21391758), (2, 10695879), (3, 7130586), (6, 3565293), (9, 2376862), (18, 1188431), (19, 1125882), (38, 562941), (57, 375294), (114, 187647), (171, 125098), (342, 62549)]