21287236

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{5381}}^1$

素因数の和:5451

約数の個数: 24

約数和(自身を含む): 39783744

約数和(自身を除く): 18496508

約数列:

[1, 2, 4, 23, 43, 46, 86, 92, 172, 989, 1978, 3956, 5381, 10762, 21524, 123763, 231383, 247526, 462766, 495052, 925532, 5321809, 10643618, 21287236]

約数ペア:

[(1, 21287236), (2, 10643618), (4, 5321809), (23, 925532), (43, 495052), (46, 462766), (86, 247526), (92, 231383), (172, 123763), (989, 21524), (1978, 10762), (3956, 5381)]