21039760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37571}}^1$

素因数の和:37591

約数の個数: 40

約数和(自身を含む): 55907136

約数和(自身を除く): 34867376

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 37571, 75142, 150284, 187855, 262997, 300568, 375710, 525994, 601136, 751420, 1051988, 1314985, 1502840, 2103976, 2629970, 3005680, 4207952, 5259940, 10519880, 21039760]

約数ペア:

[(1, 21039760), (2, 10519880), (4, 5259940), (5, 4207952), (7, 3005680), (8, 2629970), (10, 2103976), (14, 1502840), (16, 1314985), (20, 1051988), (28, 751420), (35, 601136), (40, 525994), (56, 375710), (70, 300568), (80, 262997), (112, 187855), (140, 150284), (280, 75142), (560, 37571)]