18983720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{449}}^1$

素因数の和:618

約数の個数: 64

約数和(自身を含む): 49248000

約数和(自身を除く): 30264280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 151, 280, 302, 449, 604, 755, 898, 1057, 1208, 1510, 1796, 2114, 2245, 3020, 3143, 3592, 4228, 4490, 5285, 6040, 6286, 8456, 8980, 10570, 12572, 15715, 17960, 21140, 25144, 31430, 42280, 62860, 67799, 125720, 135598, 271196, 338995, 474593, 542392, 677990, 949186, 1355980, 1898372, 2372965, 2711960, 3796744, 4745930, 9491860, 18983720]

約数ペア:

[(1, 18983720), (2, 9491860), (4, 4745930), (5, 3796744), (7, 2711960), (8, 2372965), (10, 1898372), (14, 1355980), (20, 949186), (28, 677990), (35, 542392), (40, 474593), (56, 338995), (70, 271196), (140, 135598), (151, 125720), (280, 67799), (302, 62860), (449, 42280), (604, 31430), (755, 25144), (898, 21140), (1057, 17960), (1208, 15715), (1510, 12572), (1796, 10570), (2114, 8980), (2245, 8456), (3020, 6286), (3143, 6040), (3592, 5285), (4228, 4490)]