21331940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{8963}}^1$

素因数の和:8996

約数の個数: 48

約数和(自身を含む): 54214272

約数和(自身を除く): 32882332

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 340, 476, 595, 1190, 2380, 8963, 17926, 35852, 44815, 62741, 89630, 125482, 152371, 179260, 250964, 304742, 313705, 609484, 627410, 761855, 1066597, 1254820, 1523710, 2133194, 3047420, 4266388, 5332985, 10665970, 21331940]

約数ペア:

[(1, 21331940), (2, 10665970), (4, 5332985), (5, 4266388), (7, 3047420), (10, 2133194), (14, 1523710), (17, 1254820), (20, 1066597), (28, 761855), (34, 627410), (35, 609484), (68, 313705), (70, 304742), (85, 250964), (119, 179260), (140, 152371), (170, 125482), (238, 89630), (340, 62741), (476, 44815), (595, 35852), (1190, 17926), (2380, 8963)]