81417280

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1913}}^1$

素因数の和:1956

約数の個数: 112

約数和(自身を含む): 233354880

約数和(自身を除く): 151937600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 56, 64, 70, 76, 80, 95, 112, 133, 140, 152, 160, 190, 224, 266, 280, 304, 320, 380, 448, 532, 560, 608, 665, 760, 1064, 1120, 1216, 1330, 1520, 1913, 2128, 2240, 2660, 3040, 3826, 4256, 5320, 6080, 7652, 8512, 9565, 10640, 13391, 15304, 19130, 21280, 26782, 30608, 36347, 38260, 42560, 53564, 61216, 66955, 72694, 76520, 107128, 122432, 133910, 145388, 153040, 181735, 214256, 254429, 267820, 290776, 306080, 363470, 428512, 508858, 535640, 581552, 612160, 726940, 857024, 1017716, 1071280, 1163104, 1272145, 1453880, 2035432, 2142560, 2326208, 2544290, 2907760, 4070864, 4285120, 5088580, 5815520, 8141728, 10177160, 11631040, 16283456, 20354320, 40708640, 81417280]

約数ペア:

[(1, 81417280), (2, 40708640), (4, 20354320), (5, 16283456), (7, 11631040), (8, 10177160), (10, 8141728), (14, 5815520), (16, 5088580), (19, 4285120), (20, 4070864), (28, 2907760), (32, 2544290), (35, 2326208), (38, 2142560), (40, 2035432), (56, 1453880), (64, 1272145), (70, 1163104), (76, 1071280), (80, 1017716), (95, 857024), (112, 726940), (133, 612160), (140, 581552), (152, 535640), (160, 508858), (190, 428512), (224, 363470), (266, 306080), (280, 290776), (304, 267820), (320, 254429), (380, 214256), (448, 181735), (532, 153040), (560, 145388), (608, 133910), (665, 122432), (760, 107128), (1064, 76520), (1120, 72694), (1216, 66955), (1330, 61216), (1520, 53564), (1913, 42560), (2128, 38260), (2240, 36347), (2660, 30608), (3040, 26782), (3826, 21280), (4256, 19130), (5320, 15304), (6080, 13391), (7652, 10640), (8512, 9565)]