20687730

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:168

約数の個数: 128

約数和(自身を含む): 60825600

約数和(自身を除く): 40137870

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 29, 30, 35, 42, 43, 58, 70, 79, 86, 87, 105, 129, 145, 158, 174, 203, 210, 215, 237, 258, 290, 301, 395, 406, 430, 435, 474, 553, 602, 609, 645, 790, 870, 903, 1015, 1106, 1185, 1218, 1247, 1290, 1505, 1659, 1806, 2030, 2291, 2370, 2494, 2765, 3010, 3045, 3318, 3397, 3741, 4515, 4582, 5530, 6090, 6235, 6794, 6873, 7482, 8295, 8729, 9030, 10191, 11455, 12470, 13746, 16037, 16590, 16985, 17458, 18705, 20382, 22910, 23779, 26187, 32074, 33970, 34365, 37410, 43645, 47558, 48111, 50955, 52374, 68730, 71337, 80185, 87290, 96222, 98513, 101910, 118895, 130935, 142674, 160370, 197026, 237790, 240555, 261870, 295539, 356685, 481110, 492565, 591078, 689591, 713370, 985130, 1379182, 1477695, 2068773, 2955390, 3447955, 4137546, 6895910, 10343865, 20687730]

約数ペア:

[(1, 20687730), (2, 10343865), (3, 6895910), (5, 4137546), (6, 3447955), (7, 2955390), (10, 2068773), (14, 1477695), (15, 1379182), (21, 985130), (29, 713370), (30, 689591), (35, 591078), (42, 492565), (43, 481110), (58, 356685), (70, 295539), (79, 261870), (86, 240555), (87, 237790), (105, 197026), (129, 160370), (145, 142674), (158, 130935), (174, 118895), (203, 101910), (210, 98513), (215, 96222), (237, 87290), (258, 80185), (290, 71337), (301, 68730), (395, 52374), (406, 50955), (430, 48111), (435, 47558), (474, 43645), (553, 37410), (602, 34365), (609, 33970), (645, 32074), (790, 26187), (870, 23779), (903, 22910), (1015, 20382), (1106, 18705), (1185, 17458), (1218, 16985), (1247, 16590), (1290, 16037), (1505, 13746), (1659, 12470), (1806, 11455), (2030, 10191), (2291, 9030), (2370, 8729), (2494, 8295), (2765, 7482), (3010, 6873), (3045, 6794), (3318, 6235), (3397, 6090), (3741, 5530), (4515, 4582)]