20437131200

素因数分解:

$2^6\times 5^2\times {\mathrm{641}}^1\times {\mathrm{19927}}^1$

素因数の和:20590

約数の個数: 84

約数和(自身を含む): 50369096112

約数和(自身を除く): 29931964912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 641, 800, 1282, 1600, 2564, 3205, 5128, 6410, 10256, 12820, 16025, 19927, 20512, 25640, 32050, 39854, 41024, 51280, 64100, 79708, 99635, 102560, 128200, 159416, 199270, 205120, 256400, 318832, 398540, 498175, 512800, 637664, 797080, 996350, 1025600, 1275328, 1594160, 1992700, 3188320, 3985400, 6376640, 7970800, 12773207, 15941600, 25546414, 31883200, 51092828, 63866035, 102185656, 127732070, 204371312, 255464140, 319330175, 408742624, 510928280, 638660350, 817485248, 1021856560, 1277320700, 2043713120, 2554641400, 4087426240, 5109282800, 10218565600, 20437131200]

約数ペア:

[(1, 20437131200), (2, 10218565600), (4, 5109282800), (5, 4087426240), (8, 2554641400), (10, 2043713120), (16, 1277320700), (20, 1021856560), (25, 817485248), (32, 638660350), (40, 510928280), (50, 408742624), (64, 319330175), (80, 255464140), (100, 204371312), (160, 127732070), (200, 102185656), (320, 63866035), (400, 51092828), (641, 31883200), (800, 25546414), (1282, 15941600), (1600, 12773207), (2564, 7970800), (3205, 6376640), (5128, 3985400), (6410, 3188320), (10256, 1992700), (12820, 1594160), (16025, 1275328), (19927, 1025600), (20512, 996350), (25640, 797080), (32050, 637664), (39854, 512800), (41024, 498175), (51280, 398540), (64100, 318832), (79708, 256400), (99635, 205120), (102560, 199270), (128200, 159416)]