19711377

素因数分解:

$3^3\times 7^2\times {\mathrm{47}}^1\times {\mathrm{317}}^1$

素因数の和:387

約数の個数: 48

約数和(自身を含む): 34801920

約数和(自身を除く): 15090543

約数列:

[1, 3, 7, 9, 21, 27, 47, 49, 63, 141, 147, 189, 317, 329, 423, 441, 951, 987, 1269, 1323, 2219, 2303, 2853, 2961, 6657, 6909, 8559, 8883, 14899, 15533, 19971, 20727, 44697, 46599, 59913, 62181, 104293, 134091, 139797, 312879, 402273, 419391, 730051, 938637, 2190153, 2815911, 6570459, 19711377]

約数ペア:

[(1, 19711377), (3, 6570459), (7, 2815911), (9, 2190153), (21, 938637), (27, 730051), (47, 419391), (49, 402273), (63, 312879), (141, 139797), (147, 134091), (189, 104293), (317, 62181), (329, 59913), (423, 46599), (441, 44697), (951, 20727), (987, 19971), (1269, 15533), (1323, 14899), (2219, 8883), (2303, 8559), (2853, 6909), (2961, 6657)]