20149697680

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{251}}^1\times {\mathrm{20479}}^1$

素因数の和:20757

約数の個数: 120

約数和(自身を含む): 54716497920

約数和(自身を除く): 34566800240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 251, 280, 392, 490, 502, 560, 784, 980, 1004, 1255, 1757, 1960, 2008, 2510, 3514, 3920, 4016, 5020, 7028, 8785, 10040, 12299, 14056, 17570, 20080, 20479, 24598, 28112, 35140, 40958, 49196, 61495, 70280, 81916, 98392, 102395, 122990, 140560, 143353, 163832, 196784, 204790, 245980, 286706, 327664, 409580, 491960, 573412, 716765, 819160, 983920, 1003471, 1146824, 1433530, 1638320, 2006942, 2293648, 2867060, 4013884, 5017355, 5140229, 5734120, 8027768, 10034710, 10280458, 11468240, 16055536, 20069420, 20560916, 25701145, 35981603, 40138840, 41121832, 51402290, 71963206, 80277680, 82243664, 102804580, 143926412, 179908015, 205609160, 251871221, 287852824, 359816030, 411218320, 503742442, 575705648, 719632060, 1007484884, 1259356105, 1439264120, 2014969768, 2518712210, 2878528240, 4029939536, 5037424420, 10074848840, 20149697680]

約数ペア:

[(1, 20149697680), (2, 10074848840), (4, 5037424420), (5, 4029939536), (7, 2878528240), (8, 2518712210), (10, 2014969768), (14, 1439264120), (16, 1259356105), (20, 1007484884), (28, 719632060), (35, 575705648), (40, 503742442), (49, 411218320), (56, 359816030), (70, 287852824), (80, 251871221), (98, 205609160), (112, 179908015), (140, 143926412), (196, 102804580), (245, 82243664), (251, 80277680), (280, 71963206), (392, 51402290), (490, 41121832), (502, 40138840), (560, 35981603), (784, 25701145), (980, 20560916), (1004, 20069420), (1255, 16055536), (1757, 11468240), (1960, 10280458), (2008, 10034710), (2510, 8027768), (3514, 5734120), (3920, 5140229), (4016, 5017355), (5020, 4013884), (7028, 2867060), (8785, 2293648), (10040, 2006942), (12299, 1638320), (14056, 1433530), (17570, 1146824), (20080, 1003471), (20479, 983920), (24598, 819160), (28112, 716765), (35140, 573412), (40958, 491960), (49196, 409580), (61495, 327664), (70280, 286706), (81916, 245980), (98392, 204790), (102395, 196784), (122990, 163832), (140560, 143353)]