399779968

素因数分解:

$2^7\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{389}}^1$

素因数の和:478

約数の個数: 128

約数和(自身を含む): 967449600

約数和(自身を除く): 567669632

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, 259, 296, 389, 434, 448, 496, 518, 592, 778, 868, 896, 992, 1036, 1147, 1184, 1556, 1736, 1984, 2072, 2294, 2368, 2723, 3112, 3472, 3968, 4144, 4588, 4736, 5446, 6224, 6944, 8029, 8288, 9176, 10892, 12059, 12448, 13888, 14393, 16058, 16576, 18352, 21784, 24118, 24896, 27776, 28786, 32116, 33152, 36704, 43568, 48236, 49792, 57572, 64232, 73408, 84413, 87136, 96472, 100751, 115144, 128464, 146816, 168826, 174272, 192944, 201502, 230288, 256928, 337652, 348544, 385888, 403004, 446183, 460576, 513856, 675304, 771776, 806008, 892366, 921152, 1027712, 1350608, 1543552, 1612016, 1784732, 1842304, 2701216, 3123281, 3224032, 3569464, 5402432, 6246562, 6448064, 7138928, 10804864, 12493124, 12896128, 14277856, 24986248, 28555712, 49972496, 57111424, 99944992, 199889984, 399779968]

約数ペア:

[(1, 399779968), (2, 199889984), (4, 99944992), (7, 57111424), (8, 49972496), (14, 28555712), (16, 24986248), (28, 14277856), (31, 12896128), (32, 12493124), (37, 10804864), (56, 7138928), (62, 6448064), (64, 6246562), (74, 5402432), (112, 3569464), (124, 3224032), (128, 3123281), (148, 2701216), (217, 1842304), (224, 1784732), (248, 1612016), (259, 1543552), (296, 1350608), (389, 1027712), (434, 921152), (448, 892366), (496, 806008), (518, 771776), (592, 675304), (778, 513856), (868, 460576), (896, 446183), (992, 403004), (1036, 385888), (1147, 348544), (1184, 337652), (1556, 256928), (1736, 230288), (1984, 201502), (2072, 192944), (2294, 174272), (2368, 168826), (2723, 146816), (3112, 128464), (3472, 115144), (3968, 100751), (4144, 96472), (4588, 87136), (4736, 84413), (5446, 73408), (6224, 64232), (6944, 57572), (8029, 49792), (8288, 48236), (9176, 43568), (10892, 36704), (12059, 33152), (12448, 32116), (13888, 28786), (14393, 27776), (16058, 24896), (16576, 24118), (18352, 21784)]