21463040

素因数分解:

$2^{15}\times 5^1\times {\mathrm{131}}^1$

素因数の和:166

約数の個数: 64

約数和(自身を含む): 51903720

約数和(自身を除く): 30440680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 131, 160, 256, 262, 320, 512, 524, 640, 655, 1024, 1048, 1280, 1310, 2048, 2096, 2560, 2620, 4096, 4192, 5120, 5240, 8192, 8384, 10240, 10480, 16384, 16768, 20480, 20960, 32768, 33536, 40960, 41920, 67072, 81920, 83840, 134144, 163840, 167680, 268288, 335360, 536576, 670720, 1073152, 1341440, 2146304, 2682880, 4292608, 5365760, 10731520, 21463040]

約数ペア:

[(1, 21463040), (2, 10731520), (4, 5365760), (5, 4292608), (8, 2682880), (10, 2146304), (16, 1341440), (20, 1073152), (32, 670720), (40, 536576), (64, 335360), (80, 268288), (128, 167680), (131, 163840), (160, 134144), (256, 83840), (262, 81920), (320, 67072), (512, 41920), (524, 40960), (640, 33536), (655, 32768), (1024, 20960), (1048, 20480), (1280, 16768), (1310, 16384), (2048, 10480), (2096, 10240), (2560, 8384), (2620, 8192), (4096, 5240), (4192, 5120)]