20502729

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{401}}^1$

素因数の和:462

約数の個数: 48

約数和(自身を含む): 35118720

約数和(自身を除く): 14615991

約数列:

[1, 3, 9, 13, 19, 23, 39, 57, 69, 117, 171, 207, 247, 299, 401, 437, 741, 897, 1203, 1311, 2223, 2691, 3609, 3933, 5213, 5681, 7619, 9223, 15639, 17043, 22857, 27669, 46917, 51129, 68571, 83007, 99047, 119899, 175237, 297141, 359697, 525711, 891423, 1079091, 1577133, 2278081, 6834243, 20502729]

約数ペア:

[(1, 20502729), (3, 6834243), (9, 2278081), (13, 1577133), (19, 1079091), (23, 891423), (39, 525711), (57, 359697), (69, 297141), (117, 175237), (171, 119899), (207, 99047), (247, 83007), (299, 68571), (401, 51129), (437, 46917), (741, 27669), (897, 22857), (1203, 17043), (1311, 15639), (2223, 9223), (2691, 7619), (3609, 5681), (3933, 5213)]