21179220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8209}}^1$

素因数の和:8264

約数の個数: 48

約数和(自身を含む): 60688320

約数和(自身を除く): 39509100

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 516, 645, 860, 1290, 2580, 8209, 16418, 24627, 32836, 41045, 49254, 82090, 98508, 123135, 164180, 246270, 352987, 492540, 705974, 1058961, 1411948, 1764935, 2117922, 3529870, 4235844, 5294805, 7059740, 10589610, 21179220]

約数ペア:

[(1, 21179220), (2, 10589610), (3, 7059740), (4, 5294805), (5, 4235844), (6, 3529870), (10, 2117922), (12, 1764935), (15, 1411948), (20, 1058961), (30, 705974), (43, 492540), (60, 352987), (86, 246270), (129, 164180), (172, 123135), (215, 98508), (258, 82090), (430, 49254), (516, 41045), (645, 32836), (860, 24627), (1290, 16418), (2580, 8209)]