20652240

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{647}}^1$

素因数の和:689

約数の個数: 160

約数和(自身を含む): 77137920

約数和(自身を除く): 56485680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 48, 56, 57, 60, 70, 76, 80, 84, 95, 105, 112, 114, 120, 133, 140, 152, 168, 190, 210, 228, 240, 266, 280, 285, 304, 336, 380, 399, 420, 456, 532, 560, 570, 647, 665, 760, 798, 840, 912, 1064, 1140, 1294, 1330, 1520, 1596, 1680, 1941, 1995, 2128, 2280, 2588, 2660, 3192, 3235, 3882, 3990, 4529, 4560, 5176, 5320, 6384, 6470, 7764, 7980, 9058, 9705, 10352, 10640, 12293, 12940, 13587, 15528, 15960, 18116, 19410, 22645, 24586, 25880, 27174, 31056, 31920, 36232, 36879, 38820, 45290, 49172, 51760, 54348, 61465, 67935, 72464, 73758, 77640, 86051, 90580, 98344, 108696, 122930, 135870, 147516, 155280, 172102, 181160, 184395, 196688, 217392, 245860, 258153, 271740, 295032, 344204, 362320, 368790, 430255, 491720, 516306, 543480, 590064, 688408, 737580, 860510, 983440, 1032612, 1086960, 1290765, 1376816, 1475160, 1721020, 2065224, 2581530, 2950320, 3442040, 4130448, 5163060, 6884080, 10326120, 20652240]

約数ペア:

[(1, 20652240), (2, 10326120), (3, 6884080), (4, 5163060), (5, 4130448), (6, 3442040), (7, 2950320), (8, 2581530), (10, 2065224), (12, 1721020), (14, 1475160), (15, 1376816), (16, 1290765), (19, 1086960), (20, 1032612), (21, 983440), (24, 860510), (28, 737580), (30, 688408), (35, 590064), (38, 543480), (40, 516306), (42, 491720), (48, 430255), (56, 368790), (57, 362320), (60, 344204), (70, 295032), (76, 271740), (80, 258153), (84, 245860), (95, 217392), (105, 196688), (112, 184395), (114, 181160), (120, 172102), (133, 155280), (140, 147516), (152, 135870), (168, 122930), (190, 108696), (210, 98344), (228, 90580), (240, 86051), (266, 77640), (280, 73758), (285, 72464), (304, 67935), (336, 61465), (380, 54348), (399, 51760), (420, 49172), (456, 45290), (532, 38820), (560, 36879), (570, 36232), (647, 31920), (665, 31056), (760, 27174), (798, 25880), (840, 24586), (912, 22645), (1064, 19410), (1140, 18116), (1294, 15960), (1330, 15528), (1520, 13587), (1596, 12940), (1680, 12293), (1941, 10640), (1995, 10352), (2128, 9705), (2280, 9058), (2588, 7980), (2660, 7764), (3192, 6470), (3235, 6384), (3882, 5320), (3990, 5176), (4529, 4560)]