18863523

素因数分解:

$3^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1$

素因数の和:158

約数の個数: 80

約数和(自身を含む): 36241920

約数和(自身を除く): 17378397

約数列:

[1, 3, 7, 9, 17, 19, 21, 27, 51, 57, 63, 81, 103, 119, 133, 153, 171, 189, 309, 323, 357, 399, 459, 513, 567, 721, 927, 969, 1071, 1197, 1377, 1539, 1751, 1957, 2163, 2261, 2781, 2907, 3213, 3591, 5253, 5871, 6489, 6783, 8343, 8721, 9639, 10773, 12257, 13699, 15759, 17613, 19467, 20349, 26163, 33269, 36771, 41097, 47277, 52839, 58401, 61047, 99807, 110313, 123291, 141831, 158517, 183141, 232883, 299421, 330939, 369873, 698649, 898263, 992817, 1109619, 2095947, 2694789, 6287841, 18863523]

約数ペア:

[(1, 18863523), (3, 6287841), (7, 2694789), (9, 2095947), (17, 1109619), (19, 992817), (21, 898263), (27, 698649), (51, 369873), (57, 330939), (63, 299421), (81, 232883), (103, 183141), (119, 158517), (133, 141831), (153, 123291), (171, 110313), (189, 99807), (309, 61047), (323, 58401), (357, 52839), (399, 47277), (459, 41097), (513, 36771), (567, 33269), (721, 26163), (927, 20349), (969, 19467), (1071, 17613), (1197, 15759), (1377, 13699), (1539, 12257), (1751, 10773), (1957, 9639), (2163, 8721), (2261, 8343), (2781, 6783), (2907, 6489), (3213, 5871), (3591, 5253)]