1312839890

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1\times {\mathrm{6991}}^1$

素因数の和:7298

約数の個数: 32

約数和(自身を含む): 2401332480

約数和(自身を除く): 1088492590

約数列:

[1, 2, 5, 10, 89, 178, 211, 422, 445, 890, 1055, 2110, 6991, 13982, 18779, 34955, 37558, 69910, 93895, 187790, 622199, 1244398, 1475101, 2950202, 3110995, 6221990, 7375505, 14751010, 131283989, 262567978, 656419945, 1312839890]

約数ペア:

[(1, 1312839890), (2, 656419945), (5, 262567978), (10, 131283989), (89, 14751010), (178, 7375505), (211, 6221990), (422, 3110995), (445, 2950202), (890, 1475101), (1055, 1244398), (2110, 622199), (6991, 187790), (13982, 93895), (18779, 69910), (34955, 37558)]