20075120

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{199}}^1$

素因数の和:322

約数の個数: 80

約数和(自身を含む): 51038400

約数和(自身を除く): 30963280

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 97, 104, 130, 194, 199, 208, 260, 388, 398, 485, 520, 776, 796, 970, 995, 1040, 1261, 1552, 1592, 1940, 1990, 2522, 2587, 3184, 3880, 3980, 5044, 5174, 6305, 7760, 7960, 10088, 10348, 12610, 12935, 15920, 19303, 20176, 20696, 25220, 25870, 38606, 41392, 50440, 51740, 77212, 96515, 100880, 103480, 154424, 193030, 206960, 250939, 308848, 386060, 501878, 772120, 1003756, 1254695, 1544240, 2007512, 2509390, 4015024, 5018780, 10037560, 20075120]

約数ペア:

[(1, 20075120), (2, 10037560), (4, 5018780), (5, 4015024), (8, 2509390), (10, 2007512), (13, 1544240), (16, 1254695), (20, 1003756), (26, 772120), (40, 501878), (52, 386060), (65, 308848), (80, 250939), (97, 206960), (104, 193030), (130, 154424), (194, 103480), (199, 100880), (208, 96515), (260, 77212), (388, 51740), (398, 50440), (485, 41392), (520, 38606), (776, 25870), (796, 25220), (970, 20696), (995, 20176), (1040, 19303), (1261, 15920), (1552, 12935), (1592, 12610), (1940, 10348), (1990, 10088), (2522, 7960), (2587, 7760), (3184, 6305), (3880, 5174), (3980, 5044)]