27989478

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{181}}^1$

素因数の和:282

約数の個数: 72

約数和(自身を含む): 67970448

約数和(自身を除く): 39980970

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 71, 99, 121, 142, 181, 198, 213, 242, 362, 363, 426, 543, 639, 726, 781, 1086, 1089, 1278, 1562, 1629, 1991, 2178, 2343, 3258, 3982, 4686, 5973, 7029, 8591, 11946, 12851, 14058, 17182, 17919, 21901, 25702, 25773, 35838, 38553, 43802, 51546, 65703, 77106, 77319, 115659, 131406, 141361, 154638, 197109, 231318, 282722, 394218, 424083, 848166, 1272249, 1554971, 2544498, 3109942, 4664913, 9329826, 13994739, 27989478]

約数ペア:

[(1, 27989478), (2, 13994739), (3, 9329826), (6, 4664913), (9, 3109942), (11, 2544498), (18, 1554971), (22, 1272249), (33, 848166), (66, 424083), (71, 394218), (99, 282722), (121, 231318), (142, 197109), (181, 154638), (198, 141361), (213, 131406), (242, 115659), (362, 77319), (363, 77106), (426, 65703), (543, 51546), (639, 43802), (726, 38553), (781, 35838), (1086, 25773), (1089, 25702), (1278, 21901), (1562, 17919), (1629, 17182), (1991, 14058), (2178, 12851), (2343, 11946), (3258, 8591), (3982, 7029), (4686, 5973)]