28213515

素因数分解:

$3^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2111}}^1$

素因数の和:2142

約数の個数: 48

約数和(自身を含む): 55351296

約数和(自身を除く): 27137781

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 81, 99, 135, 165, 243, 297, 405, 495, 891, 1215, 1485, 2111, 2673, 4455, 6333, 10555, 13365, 18999, 23221, 31665, 56997, 69663, 94995, 116105, 170991, 208989, 284985, 348315, 512973, 626967, 854955, 1044945, 1880901, 2564865, 3134835, 5642703, 9404505, 28213515]

約数ペア:

[(1, 28213515), (3, 9404505), (5, 5642703), (9, 3134835), (11, 2564865), (15, 1880901), (27, 1044945), (33, 854955), (45, 626967), (55, 512973), (81, 348315), (99, 284985), (135, 208989), (165, 170991), (243, 116105), (297, 94995), (405, 69663), (495, 56997), (891, 31665), (1215, 23221), (1485, 18999), (2111, 13365), (2673, 10555), (4455, 6333)]