21985660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1231}}^1$

素因数の和:1306

約数の個数: 48

約数和(自身を含む): 49674240

約数和(自身を除く): 27688580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 47, 76, 94, 95, 188, 190, 235, 380, 470, 893, 940, 1231, 1786, 2462, 3572, 4465, 4924, 6155, 8930, 12310, 17860, 23389, 24620, 46778, 57857, 93556, 115714, 116945, 231428, 233890, 289285, 467780, 578570, 1099283, 1157140, 2198566, 4397132, 5496415, 10992830, 21985660]

約数ペア:

[(1, 21985660), (2, 10992830), (4, 5496415), (5, 4397132), (10, 2198566), (19, 1157140), (20, 1099283), (38, 578570), (47, 467780), (76, 289285), (94, 233890), (95, 231428), (188, 116945), (190, 115714), (235, 93556), (380, 57857), (470, 46778), (893, 24620), (940, 23389), (1231, 17860), (1786, 12310), (2462, 8930), (3572, 6155), (4465, 4924)]