15691221

素因数分解:

$3^2\times 7^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1$

素因数の和:80

約数の個数: 96

約数和(自身を含む): 31449600

約数和(自身を除く): 15758379

約数列:

[1, 3, 7, 9, 13, 17, 21, 23, 39, 49, 51, 63, 69, 91, 117, 119, 147, 153, 161, 207, 221, 273, 299, 343, 357, 391, 441, 483, 637, 663, 819, 833, 897, 1029, 1071, 1127, 1173, 1449, 1547, 1911, 1989, 2093, 2499, 2691, 2737, 3087, 3381, 3519, 4459, 4641, 5083, 5733, 5831, 6279, 7497, 7889, 8211, 10143, 10829, 13377, 13923, 14651, 15249, 17493, 18837, 19159, 23667, 24633, 32487, 35581, 40131, 43953, 45747, 52479, 57477, 71001, 75803, 97461, 102557, 106743, 131859, 134113, 172431, 227409, 249067, 307671, 320229, 402339, 682227, 747201, 923013, 1207017, 1743469, 2241603, 5230407, 15691221]

約数ペア:

[(1, 15691221), (3, 5230407), (7, 2241603), (9, 1743469), (13, 1207017), (17, 923013), (21, 747201), (23, 682227), (39, 402339), (49, 320229), (51, 307671), (63, 249067), (69, 227409), (91, 172431), (117, 134113), (119, 131859), (147, 106743), (153, 102557), (161, 97461), (207, 75803), (221, 71001), (273, 57477), (299, 52479), (343, 45747), (357, 43953), (391, 40131), (441, 35581), (483, 32487), (637, 24633), (663, 23667), (819, 19159), (833, 18837), (897, 17493), (1029, 15249), (1071, 14651), (1127, 13923), (1173, 13377), (1449, 10829), (1547, 10143), (1911, 8211), (1989, 7889), (2093, 7497), (2499, 6279), (2691, 5831), (2737, 5733), (3087, 5083), (3381, 4641), (3519, 4459)]