20479760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{36571}}^1$

素因数の和:36591

約数の個数: 40

約数和(自身を含む): 54419136

約数和(自身を除く): 33939376

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 36571, 73142, 146284, 182855, 255997, 292568, 365710, 511994, 585136, 731420, 1023988, 1279985, 1462840, 2047976, 2559970, 2925680, 4095952, 5119940, 10239880, 20479760]

約数ペア:

[(1, 20479760), (2, 10239880), (4, 5119940), (5, 4095952), (7, 2925680), (8, 2559970), (10, 2047976), (14, 1462840), (16, 1279985), (20, 1023988), (28, 731420), (35, 585136), (40, 511994), (56, 365710), (70, 292568), (80, 255997), (112, 182855), (140, 146284), (280, 73142), (560, 36571)]