64145320

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{39113}}^1$

素因数の和:39165

約数の個数: 32

約数和(自身を含む): 147850920

約数和(自身を除く): 83705600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 39113, 78226, 156452, 195565, 312904, 391130, 782260, 1564520, 1603633, 3207266, 6414532, 8018165, 12829064, 16036330, 32072660, 64145320]

約数ペア:

[(1, 64145320), (2, 32072660), (4, 16036330), (5, 12829064), (8, 8018165), (10, 6414532), (20, 3207266), (40, 1603633), (41, 1564520), (82, 782260), (164, 391130), (205, 312904), (328, 195565), (410, 156452), (820, 78226), (1640, 39113)]