21618811.000000000

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1049}}^1$

素因数の和:1111

約数の個数: 64

約数和(自身を含む): 254016000

約数和(自身を除く): 110050191

約数列:

[1, 3, 9, 13, 17, 23, 27, 39, 51, 69, 117, 153, 207, 221, 299, 351, 391, 459, 621, 663, 897, 1049, 1173, 1989, 2691, 3147, 3519, 5083, 5967, 8073, 9441, 10557, 13637, 15249, 17833, 24127, 28323, 40911, 45747, 53499, 72381, 122733, 137241, 160497, 217143, 231829, 313651, 368199, 410159, 481491, 651429, 695487, 940953, 1230477, 2086461, 2822859, 3691431, 5332067, 6259383, 8468577, 11074293, 15996201, 47988603, 143965809]

約数ペア:

[(1, 143965809), (3, 47988603), (9, 15996201), (13, 11074293), (17, 8468577), (23, 6259383), (27, 5332067), (39, 3691431), (51, 2822859), (69, 2086461), (117, 1230477), (153, 940953), (207, 695487), (221, 651429), (299, 481491), (351, 410159), (391, 368199), (459, 313651), (621, 231829), (663, 217143), (897, 160497), (1049, 137241), (1173, 122733), (1989, 72381), (2691, 53499), (3147, 45747), (3519, 40911), (5083, 28323), (5967, 24127), (8073, 17833), (9441, 15249), (10557, 13637)]