20610009

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 35902464

約数和(自身を除く): 15292455

約数列:

[1, 3, 7, 9, 21, 31, 61, 63, 93, 173, 183, 217, 279, 427, 519, 549, 651, 1211, 1281, 1557, 1891, 1953, 3633, 3843, 5363, 5673, 10553, 10899, 13237, 16089, 17019, 31659, 37541, 39711, 48267, 73871, 94977, 112623, 119133, 221613, 327143, 337869, 664839, 981429, 2290001, 2944287, 6870003, 20610009]

約数ペア:

[(1, 20610009), (3, 6870003), (7, 2944287), (9, 2290001), (21, 981429), (31, 664839), (61, 337869), (63, 327143), (93, 221613), (173, 119133), (183, 112623), (217, 94977), (279, 73871), (427, 48267), (519, 39711), (549, 37541), (651, 31659), (1211, 17019), (1281, 16089), (1557, 13237), (1891, 10899), (1953, 10553), (3633, 5673), (3843, 5363)]