18903040

素因数分解:

$2^{12}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1$

素因数の和:113

約数の個数: 104

約数和(自身を含む): 49539168

約数和(自身を除く): 30636128

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 71, 80, 104, 128, 130, 142, 160, 208, 256, 260, 284, 320, 355, 416, 512, 520, 568, 640, 710, 832, 923, 1024, 1040, 1136, 1280, 1420, 1664, 1846, 2048, 2080, 2272, 2560, 2840, 3328, 3692, 4096, 4160, 4544, 4615, 5120, 5680, 6656, 7384, 8320, 9088, 9230, 10240, 11360, 13312, 14768, 16640, 18176, 18460, 20480, 22720, 26624, 29536, 33280, 36352, 36920, 45440, 53248, 59072, 66560, 72704, 73840, 90880, 118144, 133120, 145408, 147680, 181760, 236288, 266240, 290816, 295360, 363520, 472576, 590720, 727040, 945152, 1181440, 1454080, 1890304, 2362880, 3780608, 4725760, 9451520, 18903040]

約数ペア:

[(1, 18903040), (2, 9451520), (4, 4725760), (5, 3780608), (8, 2362880), (10, 1890304), (13, 1454080), (16, 1181440), (20, 945152), (26, 727040), (32, 590720), (40, 472576), (52, 363520), (64, 295360), (65, 290816), (71, 266240), (80, 236288), (104, 181760), (128, 147680), (130, 145408), (142, 133120), (160, 118144), (208, 90880), (256, 73840), (260, 72704), (284, 66560), (320, 59072), (355, 53248), (416, 45440), (512, 36920), (520, 36352), (568, 33280), (640, 29536), (710, 26624), (832, 22720), (923, 20480), (1024, 18460), (1040, 18176), (1136, 16640), (1280, 14768), (1420, 13312), (1664, 11360), (1846, 10240), (2048, 9230), (2080, 9088), (2272, 8320), (2560, 7384), (2840, 6656), (3328, 5680), (3692, 5120), (4096, 4615), (4160, 4544)]