17998720

素因数分解:

$2^7\times 5^1\times {\mathrm{28123}}^1$

素因数の和:28142

約数の個数: 32

約数和(自身を含む): 43029720

約数和(自身を除く): 25031000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 28123, 56246, 112492, 140615, 224984, 281230, 449968, 562460, 899936, 1124920, 1799872, 2249840, 3599744, 4499680, 8999360, 17998720]

約数ペア:

[(1, 17998720), (2, 8999360), (4, 4499680), (5, 3599744), (8, 2249840), (10, 1799872), (16, 1124920), (20, 899936), (32, 562460), (40, 449968), (64, 281230), (80, 224984), (128, 140615), (160, 112492), (320, 56246), (640, 28123)]