1664942080

素因数分解:

$2^{16}\times 5^1\times {\mathrm{5081}}^1$

素因数の和:5118

約数の個数: 68

約数和(自身を含む): 3996616932

約数和(自身を除く): 2331674852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2560, 4096, 5081, 5120, 8192, 10162, 10240, 16384, 20324, 20480, 25405, 32768, 40648, 40960, 50810, 65536, 81296, 81920, 101620, 162592, 163840, 203240, 325184, 327680, 406480, 650368, 812960, 1300736, 1625920, 2601472, 3251840, 5202944, 6503680, 10405888, 13007360, 20811776, 26014720, 41623552, 52029440, 83247104, 104058880, 166494208, 208117760, 332988416, 416235520, 832471040, 1664942080]

約数ペア:

[(1, 1664942080), (2, 832471040), (4, 416235520), (5, 332988416), (8, 208117760), (10, 166494208), (16, 104058880), (20, 83247104), (32, 52029440), (40, 41623552), (64, 26014720), (80, 20811776), (128, 13007360), (160, 10405888), (256, 6503680), (320, 5202944), (512, 3251840), (640, 2601472), (1024, 1625920), (1280, 1300736), (2048, 812960), (2560, 650368), (4096, 406480), (5081, 327680), (5120, 325184), (8192, 203240), (10162, 163840), (10240, 162592), (16384, 101620), (20324, 81920), (20480, 81296), (25405, 65536), (32768, 50810), (40648, 40960)]