12920817

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:142

約数の個数: 64

約数和(自身を含む): 23224320

約数和(自身を除く): 10303503

約数列:

[1, 3, 7, 13, 19, 21, 39, 47, 53, 57, 91, 133, 141, 159, 247, 273, 329, 371, 399, 611, 689, 741, 893, 987, 1007, 1113, 1729, 1833, 2067, 2491, 2679, 3021, 4277, 4823, 5187, 6251, 7049, 7473, 11609, 12831, 13091, 14469, 17437, 18753, 21147, 32383, 34827, 39273, 47329, 52311, 81263, 91637, 97149, 141987, 226681, 243789, 274911, 331303, 615277, 680043, 993909, 1845831, 4306939, 12920817]

約数ペア:

[(1, 12920817), (3, 4306939), (7, 1845831), (13, 993909), (19, 680043), (21, 615277), (39, 331303), (47, 274911), (53, 243789), (57, 226681), (91, 141987), (133, 97149), (141, 91637), (159, 81263), (247, 52311), (273, 47329), (329, 39273), (371, 34827), (399, 32383), (611, 21147), (689, 18753), (741, 17437), (893, 14469), (987, 13091), (1007, 12831), (1113, 11609), (1729, 7473), (1833, 7049), (2067, 6251), (2491, 5187), (2679, 4823), (3021, 4277)]