639158408

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{677}}^1\times {\mathrm{733}}^1$

素因数の和:1446

約数の個数: 64

約数和(自身を含む): 1433237760

約数和(自身を除く): 794079352

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 56, 92, 161, 184, 322, 644, 677, 733, 1288, 1354, 1466, 2708, 2932, 4739, 5131, 5416, 5864, 9478, 10262, 15571, 16859, 18956, 20524, 31142, 33718, 37912, 41048, 62284, 67436, 108997, 118013, 124568, 134872, 217994, 236026, 435988, 472052, 496241, 871976, 944104, 992482, 1984964, 3473687, 3969928, 6947374, 11413543, 13894748, 22827086, 27789496, 45654172, 79894801, 91308344, 159789602, 319579204, 639158408]

約数ペア:

[(1, 639158408), (2, 319579204), (4, 159789602), (7, 91308344), (8, 79894801), (14, 45654172), (23, 27789496), (28, 22827086), (46, 13894748), (56, 11413543), (92, 6947374), (161, 3969928), (184, 3473687), (322, 1984964), (644, 992482), (677, 944104), (733, 871976), (1288, 496241), (1354, 472052), (1466, 435988), (2708, 236026), (2932, 217994), (4739, 134872), (5131, 124568), (5416, 118013), (5864, 108997), (9478, 67436), (10262, 62284), (15571, 41048), (16859, 37912), (18956, 33718), (20524, 31142)]