640903424

素因数分解:

$2^8\times 7^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1$

素因数の和:276

約数の個数: 144

約数和(自身を含む): 1538396160

約数和(自身を除く): 897492736

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 64, 83, 112, 124, 128, 139, 166, 217, 224, 248, 256, 278, 332, 434, 448, 496, 556, 581, 664, 868, 896, 973, 992, 1112, 1162, 1328, 1736, 1792, 1946, 1984, 2224, 2324, 2573, 2656, 3472, 3892, 3968, 4309, 4448, 4648, 5146, 5312, 6944, 7784, 7936, 8618, 8896, 9296, 10292, 10624, 11537, 13888, 15568, 17236, 17792, 18011, 18592, 20584, 21248, 23074, 27776, 30163, 31136, 34472, 35584, 36022, 37184, 41168, 46148, 55552, 60326, 62272, 68944, 72044, 74368, 80759, 82336, 92296, 120652, 124544, 137888, 144088, 148736, 161518, 164672, 184592, 241304, 249088, 275776, 288176, 323036, 329344, 357647, 369184, 482608, 551552, 576352, 646072, 658688, 715294, 738368, 965216, 1103104, 1152704, 1292144, 1430588, 1476736, 1930432, 2305408, 2503529, 2584288, 2861176, 2953472, 3860864, 4610816, 5007058, 5168576, 5722352, 7721728, 10014116, 10337152, 11444704, 20028232, 20674304, 22889408, 40056464, 45778816, 80112928, 91557632, 160225856, 320451712, 640903424]

約数ペア:

[(1, 640903424), (2, 320451712), (4, 160225856), (7, 91557632), (8, 80112928), (14, 45778816), (16, 40056464), (28, 22889408), (31, 20674304), (32, 20028232), (56, 11444704), (62, 10337152), (64, 10014116), (83, 7721728), (112, 5722352), (124, 5168576), (128, 5007058), (139, 4610816), (166, 3860864), (217, 2953472), (224, 2861176), (248, 2584288), (256, 2503529), (278, 2305408), (332, 1930432), (434, 1476736), (448, 1430588), (496, 1292144), (556, 1152704), (581, 1103104), (664, 965216), (868, 738368), (896, 715294), (973, 658688), (992, 646072), (1112, 576352), (1162, 551552), (1328, 482608), (1736, 369184), (1792, 357647), (1946, 329344), (1984, 323036), (2224, 288176), (2324, 275776), (2573, 249088), (2656, 241304), (3472, 184592), (3892, 164672), (3968, 161518), (4309, 148736), (4448, 144088), (4648, 137888), (5146, 124544), (5312, 120652), (6944, 92296), (7784, 82336), (7936, 80759), (8618, 74368), (8896, 72044), (9296, 68944), (10292, 62272), (10624, 60326), (11537, 55552), (13888, 46148), (15568, 41168), (17236, 37184), (17792, 36022), (18011, 35584), (18592, 34472), (20584, 31136), (21248, 30163), (23074, 27776)]