28489040

素因数分解:

$2^4\times 5^1\times {\mathrm{356113}}^1$

素因数の和:356126

約数の個数: 20

約数和(自身を含む): 66237204

約数和(自身を除く): 37748164

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 356113, 712226, 1424452, 1780565, 2848904, 3561130, 5697808, 7122260, 14244520, 28489040]

約数ペア:

[(1, 28489040), (2, 14244520), (4, 7122260), (5, 5697808), (8, 3561130), (10, 2848904), (16, 1780565), (20, 1424452), (40, 712226), (80, 356113)]