21351890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{191}}^1\times {\mathrm{1597}}^1$

素因数の和:1802

約数の個数: 32

約数和(自身を含む): 44181504

約数和(自身を除く): 22829614

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 191, 382, 955, 1337, 1597, 1910, 2674, 3194, 6685, 7985, 11179, 13370, 15970, 22358, 55895, 111790, 305027, 610054, 1525135, 2135189, 3050270, 4270378, 10675945, 21351890]

約数ペア:

[(1, 21351890), (2, 10675945), (5, 4270378), (7, 3050270), (10, 2135189), (14, 1525135), (35, 610054), (70, 305027), (191, 111790), (382, 55895), (955, 22358), (1337, 15970), (1597, 13370), (1910, 11179), (2674, 7985), (3194, 6685)]