18671331

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:136

約数の個数: 64

約数和(自身を含む): 32440320

約数和(自身を除く): 13768989

約数列:

[1, 3, 7, 21, 23, 29, 31, 43, 69, 87, 93, 129, 161, 203, 217, 301, 483, 609, 651, 667, 713, 899, 903, 989, 1247, 1333, 2001, 2139, 2697, 2967, 3741, 3999, 4669, 4991, 6293, 6923, 8729, 9331, 14007, 14973, 18879, 20677, 20769, 26187, 27993, 28681, 30659, 38657, 62031, 86043, 91977, 115971, 144739, 200767, 214613, 270599, 434217, 602301, 643839, 811797, 889111, 2667333, 6223777, 18671331]

約数ペア:

[(1, 18671331), (3, 6223777), (7, 2667333), (21, 889111), (23, 811797), (29, 643839), (31, 602301), (43, 434217), (69, 270599), (87, 214613), (93, 200767), (129, 144739), (161, 115971), (203, 91977), (217, 86043), (301, 62031), (483, 38657), (609, 30659), (651, 28681), (667, 27993), (713, 26187), (899, 20769), (903, 20677), (989, 18879), (1247, 14973), (1333, 14007), (2001, 9331), (2139, 8729), (2697, 6923), (2967, 6293), (3741, 4991), (3999, 4669)]