28330197

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 47256192

約数和(自身を除く): 18925995

約数列:

[1, 3, 7, 19, 21, 37, 57, 101, 111, 133, 259, 303, 361, 399, 703, 707, 777, 1083, 1919, 2109, 2121, 2527, 3737, 4921, 5757, 7581, 11211, 13357, 13433, 14763, 26159, 36461, 40071, 40299, 71003, 78477, 93499, 109383, 213009, 255227, 280497, 497021, 765681, 1349057, 1491063, 4047171, 9443399, 28330197]

約数ペア:

[(1, 28330197), (3, 9443399), (7, 4047171), (19, 1491063), (21, 1349057), (37, 765681), (57, 497021), (101, 280497), (111, 255227), (133, 213009), (259, 109383), (303, 93499), (361, 78477), (399, 71003), (703, 40299), (707, 40071), (777, 36461), (1083, 26159), (1919, 14763), (2109, 13433), (2121, 13357), (2527, 11211), (3737, 7581), (4921, 5757)]