21996572

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{167}}^1$

素因数の和:350

約数の個数: 48

約数和(自身を含む): 44452800

約数和(自身を除く): 22456228

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 149, 167, 221, 298, 334, 442, 596, 668, 884, 1937, 2171, 2533, 2839, 3874, 4342, 5066, 5678, 7748, 8684, 10132, 11356, 24883, 32929, 36907, 49766, 65858, 73814, 99532, 131716, 147628, 323479, 423011, 646958, 846022, 1293916, 1692044, 5499143, 10998286, 21996572]

約数ペア:

[(1, 21996572), (2, 10998286), (4, 5499143), (13, 1692044), (17, 1293916), (26, 846022), (34, 646958), (52, 423011), (68, 323479), (149, 147628), (167, 131716), (221, 99532), (298, 73814), (334, 65858), (442, 49766), (596, 36907), (668, 32929), (884, 24883), (1937, 11356), (2171, 10132), (2533, 8684), (2839, 7748), (3874, 5678), (4342, 5066)]