215681193

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2213}}^1$

素因数の和:2263

約数の個数: 72

約数和(自身を含む): 413424648

約数和(自身を除く): 197743455

約数列:

[1, 3, 7, 9, 13, 17, 21, 39, 49, 51, 63, 91, 117, 119, 147, 153, 221, 273, 357, 441, 637, 663, 819, 833, 1071, 1547, 1911, 1989, 2213, 2499, 4641, 5733, 6639, 7497, 10829, 13923, 15491, 19917, 28769, 32487, 37621, 46473, 86307, 97461, 108437, 112863, 139419, 201383, 258921, 263347, 325311, 338589, 489073, 604149, 790041, 975933, 1409681, 1467219, 1812447, 1843429, 2370123, 3423511, 4229043, 4401657, 5530287, 10270533, 12687129, 16590861, 23964577, 30811599, 71893731, 215681193]

約数ペア:

[(1, 215681193), (3, 71893731), (7, 30811599), (9, 23964577), (13, 16590861), (17, 12687129), (21, 10270533), (39, 5530287), (49, 4401657), (51, 4229043), (63, 3423511), (91, 2370123), (117, 1843429), (119, 1812447), (147, 1467219), (153, 1409681), (221, 975933), (273, 790041), (357, 604149), (441, 489073), (637, 338589), (663, 325311), (819, 263347), (833, 258921), (1071, 201383), (1547, 139419), (1911, 112863), (1989, 108437), (2213, 97461), (2499, 86307), (4641, 46473), (5733, 37621), (6639, 32487), (7497, 28769), (10829, 19917), (13923, 15491)]