18719883

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{401}}^1$

素因数の和:449

約数の個数: 64

約数和(自身を含む): 36019200

約数和(自身を除く): 17299317

約数列:

[1, 3, 7, 9, 13, 19, 21, 27, 39, 57, 63, 91, 117, 133, 171, 189, 247, 273, 351, 399, 401, 513, 741, 819, 1197, 1203, 1729, 2223, 2457, 2807, 3591, 3609, 5187, 5213, 6669, 7619, 8421, 10827, 15561, 15639, 22857, 25263, 36491, 46683, 46917, 53333, 68571, 75789, 99047, 109473, 140751, 159999, 205713, 297141, 328419, 479997, 693329, 891423, 985257, 1439991, 2079987, 2674269, 6239961, 18719883]

約数ペア:

[(1, 18719883), (3, 6239961), (7, 2674269), (9, 2079987), (13, 1439991), (19, 985257), (21, 891423), (27, 693329), (39, 479997), (57, 328419), (63, 297141), (91, 205713), (117, 159999), (133, 140751), (171, 109473), (189, 99047), (247, 75789), (273, 68571), (351, 53333), (399, 46917), (401, 46683), (513, 36491), (741, 25263), (819, 22857), (1197, 15639), (1203, 15561), (1729, 10827), (2223, 8421), (2457, 7619), (2807, 6669), (3591, 5213), (3609, 5187)]