18278127

素因数分解:

$3^2\times 7^3\times {\mathrm{31}}^1\times {\mathrm{191}}^1$

素因数の和:249

約数の個数: 48

約数和(自身を含む): 31948800

約数和(自身を除く): 13670673

約数列:

[1, 3, 7, 9, 21, 31, 49, 63, 93, 147, 191, 217, 279, 343, 441, 573, 651, 1029, 1337, 1519, 1719, 1953, 3087, 4011, 4557, 5921, 9359, 10633, 12033, 13671, 17763, 28077, 31899, 41447, 53289, 65513, 84231, 95697, 124341, 196539, 290129, 373023, 589617, 870387, 2030903, 2611161, 6092709, 18278127]

約数ペア:

[(1, 18278127), (3, 6092709), (7, 2611161), (9, 2030903), (21, 870387), (31, 589617), (49, 373023), (63, 290129), (93, 196539), (147, 124341), (191, 95697), (217, 84231), (279, 65513), (343, 53289), (441, 41447), (573, 31899), (651, 28077), (1029, 17763), (1337, 13671), (1519, 12033), (1719, 10633), (1953, 9359), (3087, 5921), (4011, 4557)]