17953929

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{317}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 31749120

約数和(自身を除く): 13795191

約数列:

[1, 3, 7, 9, 21, 29, 31, 63, 87, 93, 203, 217, 261, 279, 317, 609, 651, 899, 951, 1827, 1953, 2219, 2697, 2853, 6293, 6657, 8091, 9193, 9827, 18879, 19971, 27579, 29481, 56637, 64351, 68789, 82737, 88443, 193053, 206367, 284983, 579159, 619101, 854949, 1994881, 2564847, 5984643, 17953929]

約数ペア:

[(1, 17953929), (3, 5984643), (7, 2564847), (9, 1994881), (21, 854949), (29, 619101), (31, 579159), (63, 284983), (87, 206367), (93, 193053), (203, 88443), (217, 82737), (261, 68789), (279, 64351), (317, 56637), (609, 29481), (651, 27579), (899, 19971), (951, 18879), (1827, 9827), (1953, 9193), (2219, 8091), (2697, 6657), (2853, 6293)]