21025060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1901}}^1$

素因数の和:1996

約数の個数: 48

約数和(自身を含む): 51125760

約数和(自身を除く): 30100700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 79, 140, 158, 316, 395, 553, 790, 1106, 1580, 1901, 2212, 2765, 3802, 5530, 7604, 9505, 11060, 13307, 19010, 26614, 38020, 53228, 66535, 133070, 150179, 266140, 300358, 600716, 750895, 1051253, 1501790, 2102506, 3003580, 4205012, 5256265, 10512530, 21025060]

約数ペア:

[(1, 21025060), (2, 10512530), (4, 5256265), (5, 4205012), (7, 3003580), (10, 2102506), (14, 1501790), (20, 1051253), (28, 750895), (35, 600716), (70, 300358), (79, 266140), (140, 150179), (158, 133070), (316, 66535), (395, 53228), (553, 38020), (790, 26614), (1106, 19010), (1580, 13307), (1901, 11060), (2212, 9505), (2765, 7604), (3802, 5530)]