18319743

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:149

約数の個数: 64

約数和(自身を含む): 31987200

約数和(自身を除く): 13667457

約数列:

[1, 3, 9, 13, 19, 27, 39, 41, 57, 67, 117, 123, 171, 201, 247, 351, 369, 513, 533, 603, 741, 779, 871, 1107, 1273, 1599, 1809, 2223, 2337, 2613, 2747, 3819, 4797, 6669, 7011, 7839, 8241, 10127, 11457, 14391, 16549, 21033, 23517, 24723, 30381, 34371, 35711, 49647, 52193, 74169, 91143, 107133, 148941, 156579, 273429, 321399, 446823, 469737, 678509, 964197, 1409211, 2035527, 6106581, 18319743]

約数ペア:

[(1, 18319743), (3, 6106581), (9, 2035527), (13, 1409211), (19, 964197), (27, 678509), (39, 469737), (41, 446823), (57, 321399), (67, 273429), (117, 156579), (123, 148941), (171, 107133), (201, 91143), (247, 74169), (351, 52193), (369, 49647), (513, 35711), (533, 34371), (603, 30381), (741, 24723), (779, 23517), (871, 21033), (1107, 16549), (1273, 14391), (1599, 11457), (1809, 10127), (2223, 8241), (2337, 7839), (2613, 7011), (2747, 6669), (3819, 4797)]