20213565148

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^2\times {\mathrm{139}}^1\times {\mathrm{17971}}^1$

素因数の和:18155

約数の個数: 72

約数和(自身を含む): 43256447360

約数和(自身を除く): 23042882212

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 119, 139, 238, 278, 289, 476, 556, 578, 973, 1156, 1946, 2023, 2363, 3892, 4046, 4726, 8092, 9452, 16541, 17971, 33082, 35942, 40171, 66164, 71884, 80342, 125797, 160684, 251594, 281197, 305507, 503188, 562394, 611014, 1124788, 1222028, 2138549, 2497969, 4277098, 4995938, 5193619, 8554196, 9991876, 10387238, 17485783, 20774476, 34971566, 36355333, 42465473, 69943132, 72710666, 84930946, 145421332, 169861892, 297258311, 594516622, 721913041, 1189033244, 1443826082, 2887652164, 5053391287, 10106782574, 20213565148]

約数ペア:

[(1, 20213565148), (2, 10106782574), (4, 5053391287), (7, 2887652164), (14, 1443826082), (17, 1189033244), (28, 721913041), (34, 594516622), (68, 297258311), (119, 169861892), (139, 145421332), (238, 84930946), (278, 72710666), (289, 69943132), (476, 42465473), (556, 36355333), (578, 34971566), (973, 20774476), (1156, 17485783), (1946, 10387238), (2023, 9991876), (2363, 8554196), (3892, 5193619), (4046, 4995938), (4726, 4277098), (8092, 2497969), (9452, 2138549), (16541, 1222028), (17971, 1124788), (33082, 611014), (35942, 562394), (40171, 503188), (66164, 305507), (71884, 281197), (80342, 251594), (125797, 160684)]