20512605580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{487}}^1\times {\mathrm{557}}^1$

素因数の和:1271

約数の個数: 96

約数和(自身を含む): 45747072000

約数和(自身を除く): 25234466420

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 199, 380, 398, 487, 557, 796, 974, 995, 1114, 1948, 1990, 2228, 2435, 2785, 3781, 3980, 4870, 5570, 7562, 9253, 9740, 10583, 11140, 15124, 18506, 18905, 21166, 37012, 37810, 42332, 46265, 52915, 75620, 92530, 96913, 105830, 110843, 185060, 193826, 211660, 221686, 271259, 387652, 443372, 484565, 542518, 554215, 969130, 1085036, 1108430, 1356295, 1841347, 1938260, 2106017, 2216860, 2712590, 3682694, 4212034, 5153921, 5425180, 7365388, 8424068, 9206735, 10307842, 10530085, 18413470, 20615684, 21060170, 25769605, 36826940, 42120340, 51539210, 53980541, 103078420, 107961082, 215922164, 269902705, 539805410, 1025630279, 1079610820, 2051260558, 4102521116, 5128151395, 10256302790, 20512605580]

約数ペア:

[(1, 20512605580), (2, 10256302790), (4, 5128151395), (5, 4102521116), (10, 2051260558), (19, 1079610820), (20, 1025630279), (38, 539805410), (76, 269902705), (95, 215922164), (190, 107961082), (199, 103078420), (380, 53980541), (398, 51539210), (487, 42120340), (557, 36826940), (796, 25769605), (974, 21060170), (995, 20615684), (1114, 18413470), (1948, 10530085), (1990, 10307842), (2228, 9206735), (2435, 8424068), (2785, 7365388), (3781, 5425180), (3980, 5153921), (4870, 4212034), (5570, 3682694), (7562, 2712590), (9253, 2216860), (9740, 2106017), (10583, 1938260), (11140, 1841347), (15124, 1356295), (18506, 1108430), (18905, 1085036), (21166, 969130), (37012, 554215), (37810, 542518), (42332, 484565), (46265, 443372), (52915, 387652), (75620, 271259), (92530, 221686), (96913, 211660), (105830, 193826), (110843, 185060)]