21772005

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{967}}^1$

素因数の和:1073

約数の個数: 32

約数和(自身を含む): 37171200

約数和(自身を除く): 15399195

約数列:

[1, 3, 5, 15, 19, 57, 79, 95, 237, 285, 395, 967, 1185, 1501, 2901, 4503, 4835, 7505, 14505, 18373, 22515, 55119, 76393, 91865, 229179, 275595, 381965, 1145895, 1451467, 4354401, 7257335, 21772005]

約数ペア:

[(1, 21772005), (3, 7257335), (5, 4354401), (15, 1451467), (19, 1145895), (57, 381965), (79, 275595), (95, 229179), (237, 91865), (285, 76393), (395, 55119), (967, 22515), (1185, 18373), (1501, 14505), (2901, 7505), (4503, 4835)]