20284137

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:198

約数の個数: 48

約数和(自身を含む): 32947200

約数和(自身を除く): 12663063

約数列:

[1, 3, 9, 23, 29, 31, 69, 87, 93, 109, 207, 261, 279, 327, 667, 713, 899, 981, 2001, 2139, 2507, 2697, 3161, 3379, 6003, 6417, 7521, 8091, 9483, 10137, 20677, 22563, 28449, 30411, 62031, 72703, 77717, 97991, 186093, 218109, 233151, 293973, 654327, 699453, 881919, 2253793, 6761379, 20284137]

約数ペア:

[(1, 20284137), (3, 6761379), (9, 2253793), (23, 881919), (29, 699453), (31, 654327), (69, 293973), (87, 233151), (93, 218109), (109, 186093), (207, 97991), (261, 77717), (279, 72703), (327, 62031), (667, 30411), (713, 28449), (899, 22563), (981, 20677), (2001, 10137), (2139, 9483), (2507, 8091), (2697, 7521), (3161, 6417), (3379, 6003)]