20966913

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 35006400

約数和(自身を除く): 14039487

約数列:

[1, 3, 9, 11, 29, 33, 67, 87, 99, 109, 201, 261, 319, 327, 603, 737, 957, 981, 1199, 1943, 2211, 2871, 3161, 3597, 5829, 6633, 7303, 9483, 10791, 17487, 21373, 21909, 28449, 34771, 64119, 65727, 80333, 104313, 192357, 211787, 240999, 312939, 635361, 722997, 1906083, 2329657, 6988971, 20966913]

約数ペア:

[(1, 20966913), (3, 6988971), (9, 2329657), (11, 1906083), (29, 722997), (33, 635361), (67, 312939), (87, 240999), (99, 211787), (109, 192357), (201, 104313), (261, 80333), (319, 65727), (327, 64119), (603, 34771), (737, 28449), (957, 21909), (981, 21373), (1199, 17487), (1943, 10791), (2211, 9483), (2871, 7303), (3161, 6633), (3597, 5829)]