399390208

素因数分解:

$2^9\times 7^1\times {\mathrm{47}}^1\times {\mathrm{2371}}^1$

素因数の和:2443

約数の個数: 80

約数和(自身を含む): 931797504

約数和(自身を除く): 532407296

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 47, 56, 64, 94, 112, 128, 188, 224, 256, 329, 376, 448, 512, 658, 752, 896, 1316, 1504, 1792, 2371, 2632, 3008, 3584, 4742, 5264, 6016, 9484, 10528, 12032, 16597, 18968, 21056, 24064, 33194, 37936, 42112, 66388, 75872, 84224, 111437, 132776, 151744, 168448, 222874, 265552, 303488, 445748, 531104, 606976, 780059, 891496, 1062208, 1213952, 1560118, 1782992, 2124416, 3120236, 3565984, 4248832, 6240472, 7131968, 8497664, 12480944, 14263936, 24961888, 28527872, 49923776, 57055744, 99847552, 199695104, 399390208]

約数ペア:

[(1, 399390208), (2, 199695104), (4, 99847552), (7, 57055744), (8, 49923776), (14, 28527872), (16, 24961888), (28, 14263936), (32, 12480944), (47, 8497664), (56, 7131968), (64, 6240472), (94, 4248832), (112, 3565984), (128, 3120236), (188, 2124416), (224, 1782992), (256, 1560118), (329, 1213952), (376, 1062208), (448, 891496), (512, 780059), (658, 606976), (752, 531104), (896, 445748), (1316, 303488), (1504, 265552), (1792, 222874), (2371, 168448), (2632, 151744), (3008, 132776), (3584, 111437), (4742, 84224), (5264, 75872), (6016, 66388), (9484, 42112), (10528, 37936), (12032, 33194), (16597, 24064), (18968, 21056)]