81721280

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13441}}^1$

素因数の和:13477

約数の個数: 56

約数和(自身を含む): 204856080

約数和(自身を除く): 123134800

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 152, 160, 190, 304, 320, 380, 608, 760, 1216, 1520, 3040, 6080, 13441, 26882, 53764, 67205, 107528, 134410, 215056, 255379, 268820, 430112, 510758, 537640, 860224, 1021516, 1075280, 1276895, 2043032, 2150560, 2553790, 4086064, 4301120, 5107580, 8172128, 10215160, 16344256, 20430320, 40860640, 81721280]

約数ペア:

[(1, 81721280), (2, 40860640), (4, 20430320), (5, 16344256), (8, 10215160), (10, 8172128), (16, 5107580), (19, 4301120), (20, 4086064), (32, 2553790), (38, 2150560), (40, 2043032), (64, 1276895), (76, 1075280), (80, 1021516), (95, 860224), (152, 537640), (160, 510758), (190, 430112), (304, 268820), (320, 255379), (380, 215056), (608, 134410), (760, 107528), (1216, 67205), (1520, 53764), (3040, 26882), (6080, 13441)]