21205512

素因数分解:

$2^3\times 3^2\times {\mathrm{53}}^1\times {\mathrm{5557}}^1$

素因数の和:5622

約数の個数: 48

約数和(自身を含む): 58525740

約数和(自身を除く): 37320228

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 53, 72, 106, 159, 212, 318, 424, 477, 636, 954, 1272, 1908, 3816, 5557, 11114, 16671, 22228, 33342, 44456, 50013, 66684, 100026, 133368, 200052, 294521, 400104, 589042, 883563, 1178084, 1767126, 2356168, 2650689, 3534252, 5301378, 7068504, 10602756, 21205512]

約数ペア:

[(1, 21205512), (2, 10602756), (3, 7068504), (4, 5301378), (6, 3534252), (8, 2650689), (9, 2356168), (12, 1767126), (18, 1178084), (24, 883563), (36, 589042), (53, 400104), (72, 294521), (106, 200052), (159, 133368), (212, 100026), (318, 66684), (424, 50013), (477, 44456), (636, 33342), (954, 22228), (1272, 16671), (1908, 11114), (3816, 5557)]