18500480

素因数分解:

$2^7\times 5^1\times {\mathrm{137}}^1\times {\mathrm{211}}^1$

素因数の和:367

約数の個数: 64

約数和(自身を含む): 44761680

約数和(自身を除く): 26261200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 137, 160, 211, 274, 320, 422, 548, 640, 685, 844, 1055, 1096, 1370, 1688, 2110, 2192, 2740, 3376, 4220, 4384, 5480, 6752, 8440, 8768, 10960, 13504, 16880, 17536, 21920, 27008, 28907, 33760, 43840, 57814, 67520, 87680, 115628, 135040, 144535, 231256, 289070, 462512, 578140, 925024, 1156280, 1850048, 2312560, 3700096, 4625120, 9250240, 18500480]

約数ペア:

[(1, 18500480), (2, 9250240), (4, 4625120), (5, 3700096), (8, 2312560), (10, 1850048), (16, 1156280), (20, 925024), (32, 578140), (40, 462512), (64, 289070), (80, 231256), (128, 144535), (137, 135040), (160, 115628), (211, 87680), (274, 67520), (320, 57814), (422, 43840), (548, 33760), (640, 28907), (685, 27008), (844, 21920), (1055, 17536), (1096, 16880), (1370, 13504), (1688, 10960), (2110, 8768), (2192, 8440), (2740, 6752), (3376, 5480), (4220, 4384)]