21055419

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1321}}^1$

素因数の和:1368

約数の個数: 48

約数和(自身を含む): 39596544

約数和(自身を除く): 18541125

約数列:

[1, 3, 7, 9, 11, 21, 23, 33, 63, 69, 77, 99, 161, 207, 231, 253, 483, 693, 759, 1321, 1449, 1771, 2277, 3963, 5313, 9247, 11889, 14531, 15939, 27741, 30383, 43593, 83223, 91149, 101717, 130779, 212681, 273447, 305151, 334213, 638043, 915453, 1002639, 1914129, 2339491, 3007917, 7018473, 21055419]

約数ペア:

[(1, 21055419), (3, 7018473), (7, 3007917), (9, 2339491), (11, 1914129), (21, 1002639), (23, 915453), (33, 638043), (63, 334213), (69, 305151), (77, 273447), (99, 212681), (161, 130779), (207, 101717), (231, 91149), (253, 83223), (483, 43593), (693, 30383), (759, 27741), (1321, 15939), (1449, 14531), (1771, 11889), (2277, 9247), (3963, 5313)]