21291390

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{78857}}^1$

素因数の和:78873

約数の個数: 32

約数和(自身を含む): 56777760

約数和(自身を除く): 35486370

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 270, 78857, 157714, 236571, 394285, 473142, 709713, 788570, 1182855, 1419426, 2129139, 2365710, 3548565, 4258278, 7097130, 10645695, 21291390]

約数ペア:

[(1, 21291390), (2, 10645695), (3, 7097130), (5, 4258278), (6, 3548565), (9, 2365710), (10, 2129139), (15, 1419426), (18, 1182855), (27, 788570), (30, 709713), (45, 473142), (54, 394285), (90, 236571), (135, 157714), (270, 78857)]