400805888

素因数分解:

$2^{12}\times 7^2\times {\mathrm{1997}}^1$

素因数の和:2035

約数の個数: 78

約数和(自身を含む): 932840226

約数和(自身を除く): 532034338

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 128, 196, 224, 256, 392, 448, 512, 784, 896, 1024, 1568, 1792, 1997, 2048, 3136, 3584, 3994, 4096, 6272, 7168, 7988, 12544, 13979, 14336, 15976, 25088, 27958, 28672, 31952, 50176, 55916, 63904, 97853, 100352, 111832, 127808, 195706, 200704, 223664, 255616, 391412, 447328, 511232, 782824, 894656, 1022464, 1565648, 1789312, 2044928, 3131296, 3578624, 4089856, 6262592, 7157248, 8179712, 12525184, 14314496, 25050368, 28628992, 50100736, 57257984, 100201472, 200402944, 400805888]

約数ペア:

[(1, 400805888), (2, 200402944), (4, 100201472), (7, 57257984), (8, 50100736), (14, 28628992), (16, 25050368), (28, 14314496), (32, 12525184), (49, 8179712), (56, 7157248), (64, 6262592), (98, 4089856), (112, 3578624), (128, 3131296), (196, 2044928), (224, 1789312), (256, 1565648), (392, 1022464), (448, 894656), (512, 782824), (784, 511232), (896, 447328), (1024, 391412), (1568, 255616), (1792, 223664), (1997, 200704), (2048, 195706), (3136, 127808), (3584, 111832), (3994, 100352), (4096, 97853), (6272, 63904), (7168, 55916), (7988, 50176), (12544, 31952), (13979, 28672), (14336, 27958), (15976, 25088)]