399918848

素因数分解:

$2^8\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{313}}^1$

素因数の和:390

約数の個数: 144

約数和(自身を含む): 985829376

約数和(自身を除く): 585910528

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 31, 32, 46, 56, 62, 64, 92, 112, 124, 128, 161, 184, 217, 224, 248, 256, 313, 322, 368, 434, 448, 496, 626, 644, 713, 736, 868, 896, 992, 1252, 1288, 1426, 1472, 1736, 1792, 1984, 2191, 2504, 2576, 2852, 2944, 3472, 3968, 4382, 4991, 5008, 5152, 5704, 5888, 6944, 7199, 7936, 8764, 9703, 9982, 10016, 10304, 11408, 13888, 14398, 17528, 19406, 19964, 20032, 20608, 22816, 27776, 28796, 35056, 38812, 39928, 40064, 41216, 45632, 50393, 55552, 57592, 67921, 70112, 77624, 79856, 80128, 91264, 100786, 115184, 135842, 140224, 155248, 159712, 182528, 201572, 223169, 230368, 271684, 280448, 310496, 319424, 403144, 446338, 460736, 543368, 560896, 620992, 638848, 806288, 892676, 921472, 1086736, 1241984, 1277696, 1562183, 1612576, 1785352, 1842944, 2173472, 2483968, 3124366, 3225152, 3570704, 4346944, 6248732, 6450304, 7141408, 8693888, 12497464, 12900608, 14282816, 17387776, 24994928, 28565632, 49989856, 57131264, 99979712, 199959424, 399918848]

約数ペア:

[(1, 399918848), (2, 199959424), (4, 99979712), (7, 57131264), (8, 49989856), (14, 28565632), (16, 24994928), (23, 17387776), (28, 14282816), (31, 12900608), (32, 12497464), (46, 8693888), (56, 7141408), (62, 6450304), (64, 6248732), (92, 4346944), (112, 3570704), (124, 3225152), (128, 3124366), (161, 2483968), (184, 2173472), (217, 1842944), (224, 1785352), (248, 1612576), (256, 1562183), (313, 1277696), (322, 1241984), (368, 1086736), (434, 921472), (448, 892676), (496, 806288), (626, 638848), (644, 620992), (713, 560896), (736, 543368), (868, 460736), (896, 446338), (992, 403144), (1252, 319424), (1288, 310496), (1426, 280448), (1472, 271684), (1736, 230368), (1792, 223169), (1984, 201572), (2191, 182528), (2504, 159712), (2576, 155248), (2852, 140224), (2944, 135842), (3472, 115184), (3968, 100786), (4382, 91264), (4991, 80128), (5008, 79856), (5152, 77624), (5704, 70112), (5888, 67921), (6944, 57592), (7199, 55552), (7936, 50393), (8764, 45632), (9703, 41216), (9982, 40064), (10016, 39928), (10304, 38812), (11408, 35056), (13888, 28796), (14398, 27776), (17528, 22816), (19406, 20608), (19964, 20032)]