20121500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{5749}}^1$

素因数の和:5775

約数の個数: 48

約数和(自身を含む): 50232000

約数和(自身を除く): 30110500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 125, 140, 175, 250, 350, 500, 700, 875, 1750, 3500, 5749, 11498, 22996, 28745, 40243, 57490, 80486, 114980, 143725, 160972, 201215, 287450, 402430, 574900, 718625, 804860, 1006075, 1437250, 2012150, 2874500, 4024300, 5030375, 10060750, 20121500]

約数ペア:

[(1, 20121500), (2, 10060750), (4, 5030375), (5, 4024300), (7, 2874500), (10, 2012150), (14, 1437250), (20, 1006075), (25, 804860), (28, 718625), (35, 574900), (50, 402430), (70, 287450), (100, 201215), (125, 160972), (140, 143725), (175, 114980), (250, 80486), (350, 57490), (500, 40243), (700, 28745), (875, 22996), (1750, 11498), (3500, 5749)]