21239902

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{173}}^1$

素因数の和:372

約数の個数: 32

約数和(自身を含む): 35629632

約数和(自身を除く): 14389730

約数列:

[1, 2, 17, 23, 34, 46, 157, 173, 314, 346, 391, 782, 2669, 2941, 3611, 3979, 5338, 5882, 7222, 7958, 27161, 54322, 61387, 67643, 122774, 135286, 461737, 624703, 923474, 1249406, 10619951, 21239902]

約数ペア:

[(1, 21239902), (2, 10619951), (17, 1249406), (23, 923474), (34, 624703), (46, 461737), (157, 135286), (173, 122774), (314, 67643), (346, 61387), (391, 54322), (782, 27161), (2669, 7958), (2941, 7222), (3611, 5882), (3979, 5338)]