18021861

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1$

素因数の和:127

約数の個数: 72

約数和(自身を含む): 32920160

約数和(自身を除く): 14898299

約数列:

[1, 3, 9, 11, 13, 19, 33, 39, 57, 67, 99, 117, 121, 143, 171, 201, 209, 247, 363, 429, 603, 627, 737, 741, 871, 1089, 1273, 1287, 1573, 1881, 2211, 2223, 2299, 2613, 2717, 3819, 4719, 6633, 6897, 7839, 8107, 8151, 9581, 11457, 14003, 14157, 16549, 20691, 24321, 24453, 28743, 29887, 42009, 49647, 72963, 86229, 89661, 105391, 126027, 148941, 154033, 182039, 268983, 316173, 462099, 546117, 948519, 1386297, 1638351, 2002429, 6007287, 18021861]

約数ペア:

[(1, 18021861), (3, 6007287), (9, 2002429), (11, 1638351), (13, 1386297), (19, 948519), (33, 546117), (39, 462099), (57, 316173), (67, 268983), (99, 182039), (117, 154033), (121, 148941), (143, 126027), (171, 105391), (201, 89661), (209, 86229), (247, 72963), (363, 49647), (429, 42009), (603, 29887), (627, 28743), (737, 24453), (741, 24321), (871, 20691), (1089, 16549), (1273, 14157), (1287, 14003), (1573, 11457), (1881, 9581), (2211, 8151), (2223, 8107), (2299, 7839), (2613, 6897), (2717, 6633), (3819, 4719)]