218158408

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{431}}^1$

素因数の和:638

約数の個数: 64

約数和(自身を含む): 458680320

約数和(自身を除く): 240521912

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 157, 248, 314, 403, 431, 628, 806, 862, 1256, 1612, 1724, 2041, 3224, 3448, 4082, 4867, 5603, 8164, 9734, 11206, 13361, 16328, 19468, 22412, 26722, 38936, 44824, 53444, 63271, 67667, 106888, 126542, 135334, 173693, 253084, 270668, 347386, 506168, 541336, 694772, 879671, 1389544, 1759342, 2097677, 3518684, 4195354, 7037368, 8390708, 16781416, 27269801, 54539602, 109079204, 218158408]

約数ペア:

[(1, 218158408), (2, 109079204), (4, 54539602), (8, 27269801), (13, 16781416), (26, 8390708), (31, 7037368), (52, 4195354), (62, 3518684), (104, 2097677), (124, 1759342), (157, 1389544), (248, 879671), (314, 694772), (403, 541336), (431, 506168), (628, 347386), (806, 270668), (862, 253084), (1256, 173693), (1612, 135334), (1724, 126542), (2041, 106888), (3224, 67667), (3448, 63271), (4082, 53444), (4867, 44824), (5603, 38936), (8164, 26722), (9734, 22412), (11206, 19468), (13361, 16328)]