20994318

素因数分解:

$2^1\times 3^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{1087}}^1$

素因数の和:1161

約数の個数: 48

約数和(自身を含む): 48372480

約数和(自身を除く): 27378162

約数列:

[1, 2, 3, 6, 9, 18, 29, 37, 58, 74, 87, 111, 174, 222, 261, 333, 522, 666, 1073, 1087, 2146, 2174, 3219, 3261, 6438, 6522, 9657, 9783, 19314, 19566, 31523, 40219, 63046, 80438, 94569, 120657, 189138, 241314, 283707, 361971, 567414, 723942, 1166351, 2332702, 3499053, 6998106, 10497159, 20994318]

約数ペア:

[(1, 20994318), (2, 10497159), (3, 6998106), (6, 3499053), (9, 2332702), (18, 1166351), (29, 723942), (37, 567414), (58, 361971), (74, 283707), (87, 241314), (111, 189138), (174, 120657), (222, 94569), (261, 80438), (333, 63046), (522, 40219), (666, 31523), (1073, 19566), (1087, 19314), (2146, 9783), (2174, 9657), (3219, 6522), (3261, 6438)]