20762980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{3449}}^1$

素因数の和:3508

約数の個数: 48

約数和(自身を含む): 51004800

約数和(自身を除く): 30241820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 140, 172, 215, 301, 430, 602, 860, 1204, 1505, 3010, 3449, 6020, 6898, 13796, 17245, 24143, 34490, 48286, 68980, 96572, 120715, 148307, 241430, 296614, 482860, 593228, 741535, 1038149, 1483070, 2076298, 2966140, 4152596, 5190745, 10381490, 20762980]

約数ペア:

[(1, 20762980), (2, 10381490), (4, 5190745), (5, 4152596), (7, 2966140), (10, 2076298), (14, 1483070), (20, 1038149), (28, 741535), (35, 593228), (43, 482860), (70, 296614), (86, 241430), (140, 148307), (172, 120715), (215, 96572), (301, 68980), (430, 48286), (602, 34490), (860, 24143), (1204, 17245), (1505, 13796), (3010, 6898), (3449, 6020)]