81449823

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:224

約数の個数: 64

約数和(自身を含む): 139768832

約数和(自身を除く): 58319009

約数列:

[1, 3, 7, 13, 21, 39, 61, 67, 73, 91, 183, 201, 219, 273, 427, 469, 511, 793, 871, 949, 1281, 1407, 1533, 2379, 2613, 2847, 4087, 4453, 4891, 5551, 6097, 6643, 12261, 13359, 14673, 16653, 18291, 19929, 28609, 31171, 34237, 53131, 57889, 63583, 85827, 93513, 102711, 159393, 173667, 190749, 298351, 371917, 405223, 445081, 895053, 1115751, 1215669, 1335243, 2088457, 3878563, 6265371, 11635689, 27149941, 81449823]

約数ペア:

[(1, 81449823), (3, 27149941), (7, 11635689), (13, 6265371), (21, 3878563), (39, 2088457), (61, 1335243), (67, 1215669), (73, 1115751), (91, 895053), (183, 445081), (201, 405223), (219, 371917), (273, 298351), (427, 190749), (469, 173667), (511, 159393), (793, 102711), (871, 93513), (949, 85827), (1281, 63583), (1407, 57889), (1533, 53131), (2379, 34237), (2613, 31171), (2847, 28609), (4087, 19929), (4453, 18291), (4891, 16653), (5551, 14673), (6097, 13359), (6643, 12261)]