25678720

素因数分解:

$2^7\times 5^1\times {\mathrm{40123}}^1$

素因数の和:40142

約数の個数: 32

約数和(自身を含む): 61389720

約数和(自身を除く): 35711000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 40123, 80246, 160492, 200615, 320984, 401230, 641968, 802460, 1283936, 1604920, 2567872, 3209840, 5135744, 6419680, 12839360, 25678720]

約数ペア:

[(1, 25678720), (2, 12839360), (4, 6419680), (5, 5135744), (8, 3209840), (10, 2567872), (16, 1604920), (20, 1283936), (32, 802460), (40, 641968), (64, 401230), (80, 320984), (128, 200615), (160, 160492), (320, 80246), (640, 40123)]