639236864

素因数分解:

$2^8\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{311}}^1$

素因数の和:402

約数の個数: 144

約数和(自身を含む): 1550954496

約数和(自身を除く): 911717632

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 37, 56, 62, 64, 74, 112, 124, 128, 148, 217, 224, 248, 256, 259, 296, 311, 434, 448, 496, 518, 592, 622, 868, 896, 992, 1036, 1147, 1184, 1244, 1736, 1792, 1984, 2072, 2177, 2294, 2368, 2488, 3472, 3968, 4144, 4354, 4588, 4736, 4976, 6944, 7936, 8029, 8288, 8708, 9176, 9472, 9641, 9952, 11507, 13888, 16058, 16576, 17416, 18352, 19282, 19904, 23014, 27776, 32116, 33152, 34832, 36704, 38564, 39808, 46028, 55552, 64232, 66304, 67487, 69664, 73408, 77128, 79616, 80549, 92056, 128464, 134974, 139328, 146816, 154256, 161098, 184112, 256928, 269948, 278656, 293632, 308512, 322196, 356717, 368224, 513856, 539896, 557312, 617024, 644392, 713434, 736448, 1027712, 1079792, 1234048, 1288784, 1426868, 1472896, 2055424, 2159584, 2468096, 2497019, 2577568, 2853736, 2945792, 4319168, 4994038, 5155136, 5707472, 8638336, 9988076, 10310272, 11414944, 17276672, 19976152, 20620544, 22829888, 39952304, 45659776, 79904608, 91319552, 159809216, 319618432, 639236864]

約数ペア:

[(1, 639236864), (2, 319618432), (4, 159809216), (7, 91319552), (8, 79904608), (14, 45659776), (16, 39952304), (28, 22829888), (31, 20620544), (32, 19976152), (37, 17276672), (56, 11414944), (62, 10310272), (64, 9988076), (74, 8638336), (112, 5707472), (124, 5155136), (128, 4994038), (148, 4319168), (217, 2945792), (224, 2853736), (248, 2577568), (256, 2497019), (259, 2468096), (296, 2159584), (311, 2055424), (434, 1472896), (448, 1426868), (496, 1288784), (518, 1234048), (592, 1079792), (622, 1027712), (868, 736448), (896, 713434), (992, 644392), (1036, 617024), (1147, 557312), (1184, 539896), (1244, 513856), (1736, 368224), (1792, 356717), (1984, 322196), (2072, 308512), (2177, 293632), (2294, 278656), (2368, 269948), (2488, 256928), (3472, 184112), (3968, 161098), (4144, 154256), (4354, 146816), (4588, 139328), (4736, 134974), (4976, 128464), (6944, 92056), (7936, 80549), (8029, 79616), (8288, 77128), (8708, 73408), (9176, 69664), (9472, 67487), (9641, 66304), (9952, 64232), (11507, 55552), (13888, 46028), (16058, 39808), (16576, 38564), (17416, 36704), (18352, 34832), (19282, 33152), (19904, 32116), (23014, 27776)]