20762440

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1607}}^1$

素因数の和:1654

約数の個数: 64

約数和(自身を含む): 52099200

約数和(自身を除く): 31336760

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 68, 76, 85, 95, 136, 152, 170, 190, 323, 340, 380, 646, 680, 760, 1292, 1607, 1615, 2584, 3214, 3230, 6428, 6460, 8035, 12856, 12920, 16070, 27319, 30533, 32140, 54638, 61066, 64280, 109276, 122132, 136595, 152665, 218552, 244264, 273190, 305330, 519061, 546380, 610660, 1038122, 1092760, 1221320, 2076244, 2595305, 4152488, 5190610, 10381220, 20762440]

約数ペア:

[(1, 20762440), (2, 10381220), (4, 5190610), (5, 4152488), (8, 2595305), (10, 2076244), (17, 1221320), (19, 1092760), (20, 1038122), (34, 610660), (38, 546380), (40, 519061), (68, 305330), (76, 273190), (85, 244264), (95, 218552), (136, 152665), (152, 136595), (170, 122132), (190, 109276), (323, 64280), (340, 61066), (380, 54638), (646, 32140), (680, 30533), (760, 27319), (1292, 16070), (1607, 12920), (1615, 12856), (2584, 8035), (3214, 6460), (3230, 6428)]