1988103680

素因数分解:

$2^9\times 5^1\times {\mathrm{269}}^1\times {\mathrm{2887}}^1$

素因数の和:3179

約数の個数: 80

約数和(自身を含む): 4786166880

約数和(自身を除く): 2798063200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 269, 320, 512, 538, 640, 1076, 1280, 1345, 2152, 2560, 2690, 2887, 4304, 5380, 5774, 8608, 10760, 11548, 14435, 17216, 21520, 23096, 28870, 34432, 43040, 46192, 57740, 68864, 86080, 92384, 115480, 137728, 172160, 184768, 230960, 344320, 369536, 461920, 688640, 739072, 776603, 923840, 1478144, 1553206, 1847680, 3106412, 3695360, 3883015, 6212824, 7390720, 7766030, 12425648, 15532060, 24851296, 31064120, 49702592, 62128240, 99405184, 124256480, 198810368, 248512960, 397620736, 497025920, 994051840, 1988103680]

約数ペア:

[(1, 1988103680), (2, 994051840), (4, 497025920), (5, 397620736), (8, 248512960), (10, 198810368), (16, 124256480), (20, 99405184), (32, 62128240), (40, 49702592), (64, 31064120), (80, 24851296), (128, 15532060), (160, 12425648), (256, 7766030), (269, 7390720), (320, 6212824), (512, 3883015), (538, 3695360), (640, 3106412), (1076, 1847680), (1280, 1553206), (1345, 1478144), (2152, 923840), (2560, 776603), (2690, 739072), (2887, 688640), (4304, 461920), (5380, 369536), (5774, 344320), (8608, 230960), (10760, 184768), (11548, 172160), (14435, 137728), (17216, 115480), (21520, 92384), (23096, 86080), (28870, 68864), (34432, 57740), (43040, 46192)]