21411850

素因数分解:

$2^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{433}}^1$

素因数の和:511

約数の個数: 48

約数和(自身を含む): 42622272

約数和(自身を除く): 21210422

約数列:

[1, 2, 5, 10, 23, 25, 43, 46, 50, 86, 115, 215, 230, 430, 433, 575, 866, 989, 1075, 1150, 1978, 2150, 2165, 4330, 4945, 9890, 9959, 10825, 18619, 19918, 21650, 24725, 37238, 49450, 49795, 93095, 99590, 186190, 248975, 428237, 465475, 497950, 856474, 930950, 2141185, 4282370, 10705925, 21411850]

約数ペア:

[(1, 21411850), (2, 10705925), (5, 4282370), (10, 2141185), (23, 930950), (25, 856474), (43, 497950), (46, 465475), (50, 428237), (86, 248975), (115, 186190), (215, 99590), (230, 93095), (430, 49795), (433, 49450), (575, 37238), (866, 24725), (989, 21650), (1075, 19918), (1150, 18619), (1978, 10825), (2150, 9959), (2165, 9890), (4330, 4945)]